Pandas define your own groupby aggregation functions
The .agg method does aggregation as it sounds and you can pass in the names of aggregation methods, Python aggregations, Numpy reduce functions and you can a...
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Matplotlib add value labels on a bar chart using bar_label
We want to add the value labels in a bar chart, which is the value of each label on the top or center of a bar in a plot. We have bar_label() method in matpl...
Pandas create new column based on value in other column with multiple conditions
In this post we will see how to create a new column based on values in other columns with multiple if/else-if conditions. It’s bit straight forward to create...
Pandas sort dataframe by month name
In this post we will see how to sort a dataframe by month name(string) column. It’s bit straight forward to sort a number or string alphabetically using sort...
How to normalize data in pandas crosstab
Pandas Crosstabs
Pandas groupby and select first, last or nth row in each group
In this post we will see how to select specific rows in each group of pandas groupby object. There are certain cases where we are interested to select only t...
image dataset from directory in Tensorflow
In this post we will create tensorflow dataset(tf.data.Dataset) from MNIST image dataset using image_dataset_from_directory function
How to create tfrecord from image ndarray dataset
In this post we will create tfrecord files from images and the dataset that we will be using is google colab MNIST sample_data for training.
How to filter out the NaN values in a pandas dataframe
As data comes in many shapes and forms, Missing values in pandas are denoted as NaN, It is a special floating-point value. There are also other ways to repre...