setting bins for 3D histogram

Question

Dave Aceti 2014-3-12

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https://ww2.mathworks.cn/matlabcentral/answers/121283-setting-bins-for-3d-histogram

回答： Dave Aceti 2014-3-14

采纳的回答： Dave Aceti

I can generate a 3D histogram using the command

>> hist3(affin_occur_z2(1:11046,1:2));figure(gcf);

but I want to change the default number of bins (10) to something like 100.

I think the number of bins should go where the question mark is, but I get a "number of bins must be specified with a 2-element numeric vector" if I put a number there. >> hist3(affin_occur_z2(1:11046,1:2)?);figure(gcf);

What is the correct format?

Thank you very much.

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Answer 1

Dave Aceti 2014-3-14

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https://ww2.mathworks.cn/matlabcentral/answers/121283-setting-bins-for-3d-histogram#answer_128365

Before looking at the hist3 documentation, found out from a colleague that the syntax is;

hist3(affin_occur_z2(1:11046,1:2),[100 100]);figure(gcf);

where [100 100] is the "2-element numeric vector" that specifies 100 bins for each data set.

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Answer 2

Dave Aceti 2014-3-12

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https://ww2.mathworks.cn/matlabcentral/answers/121283-setting-bins-for-3d-histogram#answer_128076

Thanks but I still don't understand the syntax; from above it sounds like I should use;

>> 'hist3(affin_occur_z2(1:11046,1:2),100);figure(gcf);

which gives Error: A MATLAB string constant is not terminated properly.

or maybe

>> hist3(affin_occur_z2(1:11046,1:2),100);figure(gcf);

which gives Error using hist3 (line 111) The number of bins must be specified with a 2-element numeric vector.

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Star Strider 2014-3-12

在 MATLAB Online 中打开

Eliminating the (') in this line should eliminate the string termination error:

'hist3(affin_occur_z2(1:11046,1:2),100);figure(gcf);

try:

hist3(affin_occur_z2(1:11046,1:2),100);figure(gcf);

For ‘Error using hist3 (line 111) The number of bins must be specified with a 2-element numeric vector.’, please see the hist3 documentation. It explains it much better than I ever could. Click on the entries under the Examples section near the end of the page.

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