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Programming Articles
Page 2134 of 2547
What are the different ways to install pandas?
Python pandas package can be installed via multiple ways which are −Using Anaconda distributions Using mini conda Using pipUsing Anaconda distributionsIf you are using anaconda distribution already in your system then no need to install pandas again Because pandas is a part of anaconda distribution. So we can directly import the pandas.To install a specific pandas version, give the below commandconda install pandas=1.1.5This will install the pandas 1.1.5 versionUsing mini condaBoth Anaconda and minconda use the conda package installer, but using anaconda will occupy more system storage. Because anaconda has more than 100 packages, those are automatically installed and the ...
Read MoreDoes pandas depend on NumPy?
Pandas is built on top of NumPy, which means the Python pandas package depends on the NumPy package and also pandas intended with many other 3rd party libraries. So we can say that Numpy is required for operating the Pandas.The pandas library depends heavily on the Numpy array for the implementation of pandas data objects.Exampleimport pandas as pd df = pd.DataFrame({'A':[1, 2, 3, 4], 'B':[5, 6, 7, 8]}) print('Type of DataFrame: ', type(df)) print('Type of single Column A: ', type(df['A'])) print('Type of values in column A', type(df['A'].values)) print(df['A'].values)Explanationdf variable stores a DataFrame object created by using python ...
Read MoreHow to fill missing values after merging the data frames with another value than NA in R?
To fill missing values after merging the data frames with another value than NA in R, we can follow the below steps −First of all, create two data frames.Then, merge the data frames by a common column between the two.After that, replace the NAs with another value.ExampleCreate the first data frameLet’s create a data frame as shown below −ID
Read MoreHow to use top_n function from dplyr to extract rows based on one column ordered in descending order in R?
To use top_n function from dplyr to extract rows based on one column ordered indescending order in R, we can follow the below steps −First of all, create a data frame.Then, use top_n function dplyr package along with arrange and desc function to extract rows based on one column ordered in descending order.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to create quantile regression plot with larger width of lines using ggplot2 in R?
To create quantile regression plot with larger width of lines using ggplot2 in R, we can follow the below steps −First of all, create a data frame.Then, use stat_quantile function with size argument and geom_point function of ggplot2 package to create quantile regression plot.ExampleCreate the data frameLet’s create a data frame as shown below −x
Read MoreHow to remove a row from matrix in R by using its name?
To remove a row from matrix in R by using its name, we can follow the below steps −First of all, create a matrix.Then, add names to rows of the matrix.After that, subset the matrix by deselecting the desired row with negation and single square brackets for subsetting.ExampleCreate the matrixLet’s create a matrix as shown below −M
Read MoreHow to remove a column from matrix in R by using its name?
To remove a column from matrix in R by using its name, we can follow the below steps −First of all, create a matrixThen, add names to columns of the matrix.After that, subset the matrix by deselecting the desired column with negation and single square brackets for subsetting.ExampleCreate the matrixLet’s create a matrix as shown below −M
Read MoreHow to find the row total of columns having same name in data.table object in R?
To find the row total of columns having same name in data.table object in R, we can follow the below steps −First of all, create a data.table with some columns having same name.Then, use tapply along with colnames and sum function to find the row total of columns having same name.ExampleCreate the data.tableLet’s create a data.table as shown below −library(data.table) DT
Read MoreHow to extract the last n values of all elements of a list in R?
To extract the last n values of all elements of a list in R, we can follow the below steps −First of all, create a list.Then, use tail function with sapply function to extract the last n values of all elements in the list.Example 1Create the listLet’s create a list as shown below −List1
Read MoreHow to apply two sample t test using a categorical column in R data frame?
To apply two sample t test using a categorical column in R data frame, we can follow the below steps −First of all, create a data frame.Then, use t.test function with categorical column and numerical column linked with ~ sign.ExampleCreate the data frameLet’s create a data frame as shown below −Gender
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