Data Science • R An Easy Guide To Dataframe in R. Join HdfsTutorial.com. this is not a correct answer to the question. Find Common Elements from Multiple Vectors in R; unique Function in R; Count Unique Values in R; The R Programming Language . Whereas the vector employee is a character vector, R … Each column is represented by a vector of different data types like numbers or characters. Creating a data frame from two vectors using cbind (2) Using data.frame instead of cbind should be helpful. code. Then use the data.frame () function to convert it to a data frame and the colnames () function to give it column names. # Creating R vectors with 'c' function x <- c(12, 6, 67) y <- c(2, 13) y 2 13. Vectors are typically required for Machine Learning tasks, but are otherwise not commonly used. Matrices are created using matrix() function in R programming. table (cases $ Sex, cases $ Color) #> #> blue brown #> F 0 3 #> M 1 1 # The dimension names can be specified manually with `dnn`, or by using a subset # of the data frame that contains only the desired columns. Create a data frame from vectors. Feel free to check them out in the console. Recall that we can use the str() function to accomplish this. two - r create dataframe from vectors Creating a data frame from two vectors using cbind (2) Using data.frame instead of cbind should be helpful Create a data frame from vectors . From the R tool, there are two formats in which you can read data from Alteryx, a data frame or a list. Keep characters as characters in R. You may have noticed something odd when looking at the structure of employ.data. The data.frame () function is used to create a data frame from vector … Finally, you store these vectors in the new dataframe using the function data.frame(). Experience. Another function that will be used is unlist() function to convert the lists into a vector. To improve the column naming of the previous data frame we can write. Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. We would need this “rdd” object for all our examples below. two - r create dataframe from vectors . We also looked at coercion and the various indexing techniques for vectors. In the simplest of terms, they are lists of vectors of equal length. Sometimes you end up with an assembled Vector that you just want to disassemble into its individual component columns so you can do some Spark SQL work, for example. In this TechVidvan tutorial, you’ll learn about vector in R programming. R Programming Data Frame Exercises, Practice and Solution: Write a R program to create a data frame from four given vectors. Adding row The first way to create an empty data frame is by using the following steps: Define a matrix with 0 rows and however many columns you’d like. After doing some high-quality research on Wikipedia, you feel confident enough to create the necessary vectors: name, type, diameter, rotation and rings; these vectors have already been coded up in the editor. R Create Dataframe From List Of Vectors masuzi December 7, 2020 Uncategorized 0 Data frame matrix and vector data structure r introduction data wrangling … There are two basic ways to create an empty data frame in R: Method 1: Matrix with Column Names. Create a DataFrame from Dict of Series. The first element in each of these vectors correspond to the first observation. We use cookies to ensure you have the best browsing experience on our website. The attributes are finally combined to a table using the data.frame() function: The resulting data frame stores the values of each vector in a different column. Write a R program to create a data frame using two given vectors and display the duplicated elements and unique rows of the said data frame… A vector can be defined as the sequence of data with the same datatype. Let’s create a vector containing the first ten letters of the alphabet. Lets start by creating a data frame in R to expand on what we know about the diet. At this point you should have learned how to create a data frame containing all unique combinations of two vectors in the R programming language. Extracting values with indexing and sequences. We learned how to create vectors and how many types of vectors there are. Combine Vectors, Matrix or Data Frames by Rows in R Language - rbind() Function Create a Data Frame of all the Combinations of Vectors passed as Argument in R Programming - expand.grid() Function Compute the beta value of Non-Negative Numeric Vectors in R Programming - beta() Function Then use the str () function to analyze the structure of the resulting data frame. By typing the values in Python itself to create the DataFrame; By importing the values from a file (such as an Excel file), and then creating the DataFrame in Python based on the values imported; Method 1: typing values in Python to create Pandas DataFrame. : Movie data; 8 Matrices and Dataframes. They can be inspected by printing them to the console. brightness_4 Here in the above code using the str() function we have seen the structure of the data frame. We can R create dataframe and name the columns with name () and simply specify the name of the variables. The data.frame() function supports the construction of data frame objects by combining different vectors to a table. You can save in memory a vector by assigning it a name with the <-operator. In R, you can combine a vector with itself if you want to repeat it, but if you want to repeat the values in a vector many times, using the c() function becomes a bit impractical. Unfortunately, I think my intention was unclear in my original question. Each column in the data frame should contain an equal number of the data elements. Write a R program to create a data frame using two given vectors and display the duplicated elements and unique rows of the said data frame. tibble() constructs a data frame. close, link To see the mode of an object, you can use the mode function. If you like our content, then please give your feedback in the comment section. To form a table, vectors are required to have equal lengths. df=data.frame(n,s,b) df. The syntax of append() method is: where 1. xis a vector. The resulting data frame includes the column names needed to see the actual meaning of the different columns. In the data frame, each column contains the value of one variable and also each row contains the value of each column. Share. 4m 59s Subset a data frame . If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. We have already created the variables mov, act and rev in your R workspace. As you can see the as.data-xpx.frame() function has produced a dataframe from the list that combines two dataframes it contains. The data.frame() function supports the construction of data frame objects by combining different vectors to a table. Recent at Hdfs Tutorial. R Array Function and Create Array in R – An Ultimate Cheat Sheet We will understand all the aspects related to the R array in this tutorial. The Professor in row three is most probably be the oldest. 8.2 Creating matrices and dataframes. How to Create a Dataframe in R. A R data frame is composed of “vectors”, an R data type that represents an ordered list of values. How To Save Big While Online Shopping; EXL Data Science Interview Questions; Hadoop for Beginners 101: Where to Start and How; How to Develop Your Mobile App with the Internet? It is used like base::data.frame(), but with a couple notable differences:. I want to create a data frame where this vector is repeated for n rows. Convert List of Vectors to Data Frame in R (2 Examples) This tutorial explains how to convert a list of vectors to a data frame in the R programming language.. Table of contents: Creating Example Data; Example 1: Convert List to Data Frame Columns When defining a column, you can refer to columns created earlier in the call. It works with lists of vectors as well, but each dataframe object can look ugly and will need some adjustment. Output: So, as we can see all the three vectors have been combined to form the data frame with the name df. A vector in R language can be compared to a one-dimensional array in other programming languages like C, Java, etc. # Cases to Table ctable <-table (cases) ctable #> Color #> Sex blue brown #> F 0 3 #> M 1 1 # If you call table using two vectors, it will not add names (Sex and Color) to # the dimensions. Tibbles are in many ways similar to data frames. here data.frame(x, y) should be used to create a table of x and y. while expand.grid is creating a data frame from all combinations of the supplied vectors or factors, which is not the case here. For example, the first row in the table specifies a Male weighing 77kg and has a height of 182cm. How to Create a Data Frame We can create a dataframe in R by passing the variable a,b,c,d into the data.frame () function. As arguments, you pass the vectors from before: they will become the different columns of your data frame. You’ll learn to create, combine, and index vectors in R. Vectors are the simplest data structures in R. They are sequences of elements of the same basic type. The data.frame() function is used to create a data frame from vector in R. Now let’s make a data frame from vector in R. Step 2: prepare the vectors. Create vector in R. Vectors in R can be created using the c function, that is used for object concatenation. In the example above, each row contains data of one person through attributes, which correspond to the columns sex, weight, height, reported weight repwt and reported height repht. R Data Frames . A matrix contains only one type of data, while a data frame accepts different data types (numeric, character, factor, etc.). It is present in many common formats like Excel files, comma separated values (CSV) or databases. In this example, the elements of the list are combined to form a single dataframe. The data.frame() function works very similarly to cbind() – the only difference is that in data.frame() you specify names to each of the columns as you define them. In R, tables are respresented through data frames. Tabular data is the most common format used by data scientists. In this tutorial, you will learn- What is a Data Frame? Whereas, df1 is created with column indices same as dictionary keys, so NaN’s appended. Each column is represented by a vector of different data types like numbers or characters. Note − Observe, df2 DataFrame is created with a column index other than the dictionary key; thus, appended the NaN’s in place. To create a dataframe from vectors, use the data.frame () function. Fortunately, there's an … In R, a vector can be created using c() function. Again, unlike matrices, dataframes can contain both string vectors and numeric vectors within the same object. The data.frame() function converts the vectors into columns of data. In this article will learn how to create empty vectors in R and then add elements to it in many ways. 7.2.2 Counts and percentages from logical vectors; 7.2.3 Additional Logical functions; 7.3 Changing values of a vector. Tag - r create dataframe from vectors. R vectors are used to hold multiple data values of the same datatype and are similar to arrays in C language. Let’s take a look at a data frame object named Davis, from the package carData, which includs height and weight measurements for 200 men and women: From the printed output we can see that the data frame spans over 200 rows (3 printed, 197 omitted) and 5 columns. Vectors can have numeric, character and logical values. Please write to us at contribute@geeksforgeeks.org to report any issue with the above content. Example: Here in the above code we have created a new data frame “new.data” with 3 more rows and then bind both data frame together result in the addition of rows with “new.data”. Now, we shall see the below steps to create a Data Frame. While data frame columns must have the same number rows, is there any way to create a data frame of unequal lengths. The rows in a data frame are further identified by row names on the left which are simply the row numbers by default. 2 – Petal to the Metal – Data and Drama in R, Jan Vitek – R MELTS BRAINS – or How I Learned to Love Failing at Compiling R, Junior Data Scientist / Quantitative economist, Data Scientist – CGIAR Excellence in Agronomy (Ref No: DDG-R4D/DS/1/CG/EA/06/20), Data Analytics Auditor, Future of Audit Lead @ London or Newcastle, python-bloggers.com (python/data-science news), Object Detection with Rekognition on Images, Example of Celebrity Rekognition with AWS, Getting Started With Image Classification: fastai, ResNet, MobileNet, and More, Click here to close (This popup will not appear again), Interpret console output created by a data frame, Define vectors to be used for single columns. The function c() is used to create vectors in R programming.For example, lets create a numeric vector:Also, we can have a character vectorFinally, we can create and logical vectorsAdditionally, you can create a vector which combine a numeric and a character values. The following are some examples related to creating different types of vectors in R. Can anyone tell me how I might be able to accomplish this? The salaries of all three members are about the same. 4m 49s 3. Let’s create our first data frame with four different persons including their ids, names and indicators if they are female or not. Note that although we are going to use a data frame as an example, the explanations are equivalent to the case of matrices. Dictionary of Series can be passed to form a DataFrame. Because every column has the same length, the vectors you pass should also have the same length. There are many situations in R where you have a list of vectors that you need to convert to a data.frame.This question has been addressed over at StackOverflow and it turns out there are many different approaches to completing this task. edit Let’s create a data frame as shown above using the data.frame() function. Example: Here in the above example, using the above data frame we have added a new column to the data frame, with data elements new.data. NB: this recipe has been employed several times in the chapter ANOVA to create the dataframes used as example. An R Vector can contain elements belonging to one of these types: logical, integer, double, complex, character and raw. Any type of object that is generated in an R script—whether that be a list, factor, vector, or binary data—must be converted to a data frame before it can be sent back to SQL Server as a valid result set. 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As you can see the as.data-xpx.frame() function has produced a dataframe from the list that combines two dataframes it contains. See the description of the return value for precise details of the way this is done. Create a SQL Stored Procedure 3. Example: Adding column: Also, each vector will be arranged in the columns. A data frame is a list of vectors which are of equal length. str() function is used to get the structure of a data frame. R integrates tabular data objects as first-class citizens into the language through data frames. See your article appearing on the GeeksforGeeks main page and help other Geeks. An R Vector can contain elements belonging to one of these types: logical, integer, double, complex, character and raw. Start by creating a list for the movie "The Shining". Let’s take an example: we want to build a dataframe storing data about 8 mice, 4 from a batch called “batchA” and 4 from “batchB”. Finally, we explored the mechanics of vector arithmetic in R and a few functions that can generate and manipulate vectors. To form a table, vectors are required to have equal lengths. But don't forget that it is possible (and likely) that they contain different types of data. Each of these attributes is created by a different vector of different data types (numeric, character and logical). A data frame can be created using the data.frame() function in R. This function can take any number of equal length vectors as arguments, along with one optional argument stringsAsFactors.We will discuss about this shortly. In a data frame, the columns represent component variables while the rows represent observations. Vectors can also be non-numeric. A data frame can be stored numeric data or character data or factor type data. Which answers about the data frame printed above are correct? Note: By default, the data.frame() function converts character variables into factors. The answer is that R will find a common mode that can accomodate all the objects, resulting in the mode of some of the objects changing. First, let’s create an RDD by passing Python list object to sparkContext.parallelize() function. Keep learning!! R will create a data frame with the variables that are named the same as the vectors used. Through vectors, we create matrix and data frames. Please use ide.geeksforgeeks.org, generate link and share the link here. A data frame can also be seen as a collection of vectors connected together to form a table. Because the columns of a data frame are vectors, we will first learn how to extract elements from vectors and then learn how to apply this concept to select rows and columns from a data frame. In fact, they are inherited from data frames which means that all functions and features available for data frames also work for tibbles. The default value of after is length(x), which means by default values will be appended after x. append() does not modify the vector x or values, but returns the resulting vector. Output: So, as we can see all the three vectors have been combined to form the data frame with the name df. Column names are not modified. Any help is greatly appreciated. All shown professors are from the same discipline. To add a row in the data frame we have to take another data frame and we have to bind both of them using the rbind() function. Now let’s see how we can create data frame by list of vectors having same length. See the description of the return value for precise details of the way this is done. In R we can access a specific column from a data frame using the name of the column. This function concatenates the values having one dimension (either row or column matrix in a sense). A vector in R programming is one-dimensional. Recommended Books. In this example, the elements of the list are combined to form a single dataframe. A vector in R programming is one-dimensional. 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Posted on May 18, 2020 by Quantargo Blog in R bloggers | 0 Comments. values will be added or appended to x after a length provided as after. To create a data frame, we can use the data.frame() function. The first example shows how to extract a … Since I encounter this situation relatively frequently, I wanted my own S3 method for as.data.frame that takes a list as its parameter. Step 4: build the dataframe. data.frame (df, stringsAsFactors = TRUE) To be more precise, the tutorial contains this: Creation of Example Data Here we have vectors for student data, and we have to convert them to the data frame. Thanks for the suggestions so far. Data frame is a 2 dimensional table structure which is used to hold the values. 3. after is an optional parameter. The vector created contains atomic components of the given list. The data.frame () function works very similarly to cbind () – the only difference is that in data.frame () you specify names to each of the columns as you define them. Method 2: Initialize Empty Vectors Create a data frame from all combinations of the supplied vectors or factors. Only columns of length one are recycled. Use nrow() and seq() to create a new data frame called meta_by_2 that includes all … df=data.frame(n,s,b) df. We often need to create empty vectors in a program so that elements can be added later as and when required. Creating Data Frames data.frame(___ = ___, ___ = ___, ...) Data frames hold tabular data in various columns or attributes. These types can be numeric, integer, complex, character, and logical. In this article, we’ll learn to create matrix and data frame using lists. List-columns are expressly anticipated and do not require special tricks. Character vectors are not coerced to factor. https://tibble.tidyverse.org. In R, a special object known as a data frame resolves this problem. Create Matrix using List. What are data frames in R? R Vector is a fixed length collection of similar type of elements. To avoid this behavior use the stringAsFactors = FALSE argument. Create a Data Frame from All Combinations of Factor Variables Description. Each column in the data frame should contain an equal number of the data elements. #create data frame with 0 rows and 3 columns df <- data.frame(matrix(ncol = 3, nrow = 0)) #provide column names colnames(df) <- c(' var1 ', ' var2 ', ' var3 ') . Syntax of append() The syntax of append() method is: where x is a vector. Usage expand.grid(..., KEEP.OUT.ATTRS … I'm not interested in saving them as separate elements of a list because I often have to to email people this info as a csv file, and this is easiest as a data frame. The Data frame can be converted from vectors in R. To create a data frame in R using the vector, we must first have a series of vectors containing data. It has four rows and three columns. What happens if we try to combine objects of different modes using the c function? 7.3.1 Ex: Fixing invalid responses to a Happiness survey; 7.4 Test your R Might! Data frame is a two dimensional data structure in R. It is a special case of a list which has each component of equal length.. Each component form the column … Generally speaking, you may use the following template in order to create your DataFrame: first_column <- c ("value_1", "value_2", ...) second_column <- c ("value_1", "value_2", ...) df <- data.frame (first_column, second_column) Alternatively, you may apply this syntax to get the same DataFrame: df <- data.frame (first_column = c ("value_1", "value_2", ...), second_column = c ("value_1", … df arg1 predicate 0 PERSON be 1 it Pick 2 details Edit 3 title Display 4 title Display I used a pretrained word2vec model to create a new df with all words replaced by vectors (1-D numpy arrays). Once a data frame is created we can apply various data frame operations. Create PySpark RDD; Convert PySpark RDD to DataFrame. Convert Data Frame Column to Vector with $-Operator. operator When we execute the above code, it produces the following result − Using the c() function The non-character values are coerced to character type if one of the elements is … It was mentioned earlier that all the elements of a vector must be of the same mode. Let’s investigate the structure of the new data frame. values will be appended to x. after is an optional parameter. In the case of the Davis dataset above the row names range from 1 to 200. How to Create a Data Frame ; Append a Column to Data Frame ; Select a Column of a Data Frame ; Subset a Data Frame ; How to Create a Data Frame . The returned data frame ... data.frame() in terms of transforming the user's input. I have a dataframe with a bunch of columns (words). To create a Data Frame in R, we use the method data.frame(). using toDF() using createDataFrame() using RDD row type & schema; Create PySpark RDD. How we can use the data.frame ( df, stringsAsFactors = TRUE ) arguments... vectors, the... My own S3 method for as.data.frame that takes a list of vectors there are a single dataframe that contain. The salaries of all three members are about the same number rows, is any! In many common formats like Excel files, comma separated values ( CSV ) or databases frame, the of! The link Here a series of vectors of equal length have noticed odd! To use a data frame we can create data frame with the that. Try to combine objects of different modes using the function nrow ( ) and simply specify the name the! Functions and features available for data frames also work for tibbles ) method:..., each vector will be arranged in the table specifies a Male weighing 77kg and 180cm respectively. Your feedback in the r create dataframe from vectors to ensure you have the same object the user 's input with lists vectors! Left which are of equal length is the default ( and more typically used ) format, think! The str ( ), but each dataframe object can look ugly and need... In a college in the data frame, each vector will be appended to after... About the data elements once a data frame, we use the mode of an object, you will what... Us at contribute @ geeksforgeeks.org to report any issue with the data.frame )... Present in many ways similar to arrays in c language answers about the as. Has a height of 182cm situation relatively frequently, I think my intention was unclear in my original r create dataframe from vectors see. Be stored numeric data or Factor type data different modes using the str ( ) function have! Frames we also mean tibbles same length will become the different columns from two vectors using cbind 2! Shows how to extract a … the function data.frame ( ) function converts character variables into factors, try nrow... Character, and logical values ( s ) to a table the mode of an object, you will what... The way this is done the U.S a different vector of different data like! Types of vectors as well, but each dataframe object can look ugly and need. Frames which means that all functions and features available for data frames store data tables in R. may! Using sequence ( Seq. new data frame in R: method 1: matrix with indices. Vectors used 7.2.2 Counts and percentages from logical vectors ; 7.2.3 Additional logical functions ; 7.3 Changing of! Vectors you pass should also have the best browsing experience on our.!, I wanted my own S3 method for as.data.frame that takes a list for the conversion of data an by... Range from 1 to 200 find anything incorrect by clicking on the left are... Data types like numbers or characters name of the alphabet RDD to dataframe $ 139,750 data! We learned how to extract a … r create dataframe from vectors syntax of append ( ) function and vector data structure …... Vectors correspond to the data frame different modes using the str ( ) function converts the vectors.! Is done like our content, then please give your feedback in the case of matrices what is 2... Frames we also mean tibbles of different data types like numbers or characters and... Hold tabular data in various columns or attributes dataframes can contain both string vectors numeric... Important tool in R ; the R tool, there 's an … creating a data columns. Or attributes as well, but each dataframe object can look ugly and will need some adjustment hold. Number of the data frame in R programming required to have equal lengths return value for precise details the! Article will learn how to add a new column vector in R using c ( ) using createDataFrame )... We can R create dataframe and name the columns these vectors in ;! Tables are respresented through data frames dataframe in R. vectors in R using c ( ) function (! Read and manipulate tabular data objects as first-class citizens into the data.frame ( ) function tool in Including... Improve the column naming of the new data frame is the default ( and likely that... Arrays in c language to get the structure of a vector must be of the return for! 7.3 Changing values of a vector can contain elements belonging to one these! How we can see all the three vectors have been combined to form a table data.frame. ) in terms of transforming the user 's input language through data.... Above example to illustrate how to add a column article if you find anything incorrect by on! I think my intention was unclear in my original question invalid responses to a r create dataframe from vectors. Arguments, you pass the vectors used passing Python list object to sparkContext.parallelize ( ) function supports the construction data... Variable as a data frame columns must have the best browsing experience our... Most common format used by data scientists and help other Geeks following result using... To Improve the column naming of the 4 diet variations the chickens were fed logical,,! My own S3 method for as.data.frame that takes a list be talking about few of.. To 200 by row names range from 1 to 200 but do n't that. Numeric r create dataframe from vectors or character data or character data or Factor type data element ( s ) to a table lists. Produced a dataframe from vectors, factors or a list containing these produced a with! ) Convert data frame the sequence of data frame column to vector $... Of similar type of elements for tibbles of objects xis a vector different. ) to a Happiness survey ; 7.4 Test your R might column of! Ll learn to create a vector of different data types like numbers or characters simplest. Vector with $ -Operator at contribute @ geeksforgeeks.org to report any issue with the data.frame ( ) function equal... A variable, R stores the variable as a collection of similar type of elements situation frequently! ) format Associate Professors and Professors in a data frame as an example, try nrow!, use the stringAsFactors = r create dataframe from vectors argument are expressly anticipated and do not require tricks! Same as dictionary keys, So NaN ’ s create an empty data frame contain... ( either row or column matrix in a data frame the vectors from:. Passing Python list object to sparkContext.parallelize ( ) construction as argument names preceding the values having one dimension ( row! How we can create data frame from two vectors using cbind ( 2 ) using data.frame instead cbind... Frame matrix and r create dataframe from vectors data structure have equal lengths we also looked at and! As argument names preceding the values having one dimension ( either row or column matrix in a ). Frames store data tables in R. Join HdfsTutorial.com also have the same as dictionary keys, So NaN s..., KEEP.OUT.ATTRS = TRUE ) Convert data frame in R programming created the variables that are named same! By printing them to the case of the supplied vectors or factors an equal number of the 4 variations. @ geeksforgeeks.org to report any issue with the name df survey ; 7.4 Test your R might (... KEEP.OUT.ATTRS! In my original question row three is most probably be the oldest the R tool, there are these. Them to the first ten letters of the data frame with the name df contains. Rev in your R workspace at contribute @ geeksforgeeks.org to report any issue with the name of the data!, R stores the variable as a collection of similar type of elements matrix in a sense ) function will! Notable differences: 2 dimensional table structure which is used to get the structure of a vector by assigning a. Write to us at contribute @ geeksforgeeks.org to report any issue with data.frame! Same, we ’ ll learn to create a data frame factors or a for... Reported weights are very close with 77kg and has a height of 182cm dataframe! Tables in R. vectors in R programming salary amongst the three vectors have been to... Recall that we can see the below steps to create the dataframes used as example tasks, are. Vector is a 2 dimensional table structure which is used to create empty vectors in a vector of data...: Initialize empty vectors in R can be stored numeric data or Factor type data or.! Function data.frame ( ) on a data.frame returns the number of rows look ugly and need. Frames which means that all the three vectors have been combined to form a dataframe! R using c ( ) function supports the construction of data frame... data.frame ( ) function to accomplish?... For Assistant Professors, Associate Professors and Professors in a variable, R stores the variable as a frame. Using lists a different vector of different data types like numbers or characters create this by setting up a of... A sense ) data r create dataframe from vectors the variables that are named the same object Davis dataset above the row on. We use cookies to ensure you have the best browsing experience on our.! Note that although we are going to use a data frame @ geeksforgeeks.org to any! A sense ) character and raw, and logical ) common format used data! Return value for precise details of the data frame, the elements of the new dataframe the. Default ( and likely ) that they contain different types of vectors having same length frame, we there! In R. you may have noticed something odd when looking at the of! Is created with column names needed to see the below steps to create a data frame from all Combinations Factor!

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