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How to Count the Number of NA in R
This tutorial will go through counting the number of missing values or NAs in a data frame in R. Table of contentsExampleGet Airquality DataSolution #1: Use summarySolution #2: Use sum and is.naSolution #3: Use sum and is.na in FunctionSummary Example Let's look at an...
How to Solve Python AttributeError: ‘numpy.ndarray’ has no attribute ‘values’
If you attempt to call the values() method on a NumPy array, you will raise the error AttributeError: ‘numpy.ndarray’ object has no attribute ‘values’. The values() method belongs to the DataFrame object. This error typically occurs when trying to...
How to Solve Python AttributeError: ‘Response’ object has no attribute ‘read’
This error occurs when you try to get the content from a RESTful API request with the requests library. The read() method does not belong to the response object, it is a File method. You can solve this error by using text to get the string representation of the...
How to Solve Python AttributeError: ‘Response’ object has no attribute ‘get’
This error occurs when you try to use the Dictionary method get() to access values from a Response object. You can solve this error by converting the Response object to a JSON object. Once you have a JSON object, you can access values using the get() method. This...
How to Solve Python AttributeError: ‘str’ object has no attribute ‘close’
This error occurs when you try to close a string instead of a File object. You can solve this error by keeping the open() call separate from the read() call so that the file object and file contents are under different variable names. Then you can close the file once...
How to Solve R Error in stripchart.default(x1, …) : invalid plotting method
This error occurs when you try to create a scatter plot using data frames instead of a pair of vectors. To solve this error, you can extract vectors from columns using a comma when subsetting the data frame or using the $ operator followed by the column names. This...
How to Solve R Error geom_path: each group consists of only one observation
This error occurs when you try to create a line plot using ggplot2 but the x-variable is non-numeric, for example, factor or character. You can solve this error by using group=1 as an argument in the ggplot() function call, otherwise, you can coerce your x-variable to...
How to Calculate Hamming Distance in R
In R, Hamming distance is a type of distance metric for finding how similar two vectors are. If the vectors are equal in length, Hamming distance determines the number of bit positions different between them. We can also describe Hamming distance as the minimum number...
How to Solve R Error in parse(text): unexpected symbol
This error typically occurs if you have a string starting with a number or if a hyphen is in the wrong place. To solve this error you can change the string so that it does not start with a number. This tutorial will go through the error in detail and how to solve it...
How to Solve R Error in rbind(deparse.level, …): numbers of columns of arguments do not match
This error occurs if you try to use rbind to row-bind two data frames with mismatching numbers of columns. We can solve the error by using the bind rows function from the dplyr package. This tutorial will go through how to solve the error with code examples. Table of...
Suf is a senior advisor in data science with deep expertise in Natural Language Processing, Complex Networks, and Anomaly Detection. Formerly a postdoctoral research fellow, he applied advanced physics techniques to tackle real-world, data-heavy industry challenges. Before that, he was a particle physicist at the ATLAS Experiment of the Large Hadron Collider. Now, he’s focused on bringing more fun and curiosity to the world of science and research online.