How do I make a 3D histogram for my data set?

Hello, the dataset I am working with is a matrix where the contents of each row is 500 samples from a lab instrument and each row differs by the other by having the samples measured with one parameter within the instrument changed. What I am able to do now is to make histograms of each individual row so I can see the distribution of readings for a single value of the mentioned parameter. What I would like is a 3D plot where the x axis is the readings from the instrument, the y axis is the range of values of that parameter, and the z axis is the frequency of a given reading at a given parameter value. Is this possible in MATLAB or any other piece of software? Hopefully this makes sense, I can clarify anything if needed or provide the dataset as well.

[darova]

Can you attach the data? What about hist3?

Answer 1

[Pratheek Punchathody]

“hist3()” is a function in which the user should need a 2D Matrix in which 1st column is x value, and 2nd column is y value. Then the function plots number of occurrences of the pairs x, y as the z parameter.

By looking at the information you have provided regarding the data, you can consider

• x axis is the readings from the instrument,
• y axis is the range of values of that parameter and
• In your case function will plot the frequency of the given reading as the Z axis.

Refer to the documentation on hist3() for further details.