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Questions tagged [histogram2d]

131 questions
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Save binned data from numpy.histogram2d to text file

I want to do a 2d histogram using python and save the result as a three columns data file(x, y, histogram). The 2d data just looks like this: x y -0.609 -3.042 -0.528 -2.861 -1.219 -2.938 -0.196 -2.007 0.173 -3.128 1.600 …
Dd H
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Calculate histogram graphic columns height

I cannot figure out the easiest formula to calculate the height of column in histogram graphic. For example, I have an array of data var data = [82, 61, 88, 245, 201, 619, 735, 1099, 1088, 1477, 1531, 1717, 1263, 1674, 1254, 1134, 718, 887, 748,…
Kosmetika
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Remove vertical lines from the plot d3.js

I am using d3.js to plot the histograms. I want to remove the vertical lines that are connected to the plot at the start point and end point of the plot: https://i.stack.imgur.com/CpP6C.png Thank you in advance ;) (function(window, document,…
Mateusz Mateja
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2D Histogram in R: Converting from Count to Frequency within a Column

Would appreciate help with generating a 2D histogram of frequencies, where frequencies are calculated within a column. My main issue: converting from counts to column based frequency. Here's my starting code: # expected…
Jac
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2D histogram of 1D function of random number

I have a 1D function of N values. I want to make a 2D histogram so that I get an image of nx*ny pixels and then cut the image summing along 1 dimension. The function before and after should be the same. I tried with a gaussian but I am missing a…
SUV
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Issue with numpy's histogram2d and colormaps

So on the right I've got eigenvalue spectra of 1000 matrices scatter plotted over each other. On the left I wanted get a histogram oder density function to where eigenvalues occur and how often. The histogram is done with numpy: bins = 200 d =…
alice
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How do I use mathlibplot.hist with x and y values using bins=40 in Python 3?

I have a large list of data points of x and y values that I need to put into a histogram with 40 bins but mathlibplot.hist is only letting me enter 1 variable with bins. I've tried hist2d as well but it's not very clean. Any help would be…
Cathal McAleer
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Decrease white space among bars in Matplotlib histograms

I generated the following histogram: I wish to compact the histogram, i.e. reducing the white space between bars (for instance, between 0.8-0.85 and 0.85-0.9). In this respect, a solution that increase the width of the bars is not convenient for…
MM92x
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plotting density map per km2 pr year

i have a csv file containing data of 6 years ( date, longitude, latitude,value ) i plotted the density map using histogramm2d and contourf per km ,i got a beautiful map, but i believe that i plotted the density per km per 6year, so i need to take…
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CUDA histogram2d not working

Due to a seeming lack of a decent 2D histogram for CUDA (that I can find... pointers welcome), I'm trying to implement it myself with pyCUDA. Here's what the histogram should look like (using Numpy): Here's what I've got so far: code =…
scnerd
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Plotting two different image histograms as a single 2D histogram plot

I'm looking to plot the histogram of one uint16 image on the x axis and the histogram of another uint16 image on the y axis, such that I get a colormap of the relationship between them as a 2D plot. I have tried to form two seperate histograms and…
user12540304
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