Mar 5, 2024 · If I have a list of y-values that correspond to bar height and a list of x-value strings, how do I plot a histogram using matplotlib.pyplot.hist? Related: matplotlib.pyplot.bar.

I created a histogram plot using data from a file and no problem. Now I wanted to superpose data from another file in the same histogram, so I do something like this n,bins,patchs = ax.hist(mydata1,100) n,bins,patchs = ax.hist(mydata2,100) but the problem is that for each interval, only the bar with the highest value appears, and the other is ...

The numpy histogram functionality is really the Cadillac option because np.histogram can do things like try to figure out how many bins you need and it can do weighting and it has all the algorithms it uses documented with lots of great documentation and example code.

Mar 4, 2014 · You can use newer OpenCV python interface which natively uses numpy arrays and plot the histogram of the pixel intensities using matplotlib hist. It takes less than second on my computer. import matplotlib.pyplot as plt import cv2 im = cv2.imread('image.jpg') # calculate mean value from RGB channels and flatten to 1D array vals = im.mean(axis=2).flatten() # plot histogram with 255 bins b, bins ...

I'm trying to do a little bit of distribution plotting and fitting in Python using SciPy for stats and matplotlib for the plotting. I'm having good luck with some things like creating a histogram: ...

Oct 25, 2013 · This is the default behavior of pandas plotting functions (one plot per column) so if you reshape your data frame so that each letter is a column you will get exactly what you want. df.reset_index().pivot('index','Letter','N').hist() The reset_index() is just to shove the current index into a column called index.

I was instructed to plot two histograms in a Jupyter notebook with Python 3.6. x.plot.hist(bins=8) plt.show() I chose 8 bins because that looked best to me. I have also been instructed to plot another histogram with the log of x. x.plot.hist(bins=8) plt.xscale('log') plt.show() This histogram looks TERRIBLE. Am I not doing something right?

This gives me a histogram with the x-axis labelled 0.0 0.5 1.0 1.5 2.0 2.5 3.0. 3.5 4.0. I would like the x-axis to be labelled 0 1 2 3 instead with the labels in the center of each bar.

Mar 14, 2017 · I created a dictionary that counts the occurrences in a list of every key and I would now like to plot the histogram of its content. This is the content of the dictionary I want to plot: {1: 27, ...

Oct 25, 2015 · I would like to add a density plot to my histogram diagram. I know something about pdf function but I've got confused and other similar questions were not helpful. from scipy.stats import * from ...