error in my code

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thelong le
thelong le 2021-6-12
编辑： Stephen23 2021-6-12
I can't use csview() command, when I run the program, my command shows an error (' Unrecognized function or variable 'csview'.' )
and my code
% generate two clusters of color points
rgb = min(abs(randn(2000,3).*[0.5 0.3 0.1] + [0 0 0]),1);
rgb = [rgb; 1-rgb];
xyz = rgb2xyz(rgb);
xlabel('X');
ylabel('Z');
zlabel('Y');
hold on;
% plot the points
scatter3(xyz(:,1),xyz(:,3),xyz(:,2),10,rgb,'.');
view(3); grid on;
axis equal
axis([0 1 0 1.1 0 1]);
set(gca,'color','k','gridcolor','k','gridalpha',0.3)
set(gca,'projection','perspective');
view('xyz','alpha'0.2,'invert',1); hold on; % do this before scatter3()
how to fix this
many thanks ^^

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回答（1 个）

Stephen23
Stephen23 2021-6-12
编辑：Stephen23 2021-6-12
You need to download this FEX submission (by clicking on the big blue "Download button"):
https://www.mathworks.com/matlabcentral/fileexchange/53786-image-manipulation-toolbox
and unzip it onto your MATLAB Search Path or into the current folder.
Have you done that?
  2 个评论
thelong le
thelong le 2021-6-12
I have downloaded and unzipped them according to the path in (C:\Users\DELL\Downloads\_temp_matlab_R2021a_win64\bin\win64)
but my program still shows the above error, is there any other solution, many thanks
Stephen Cobeldick!
Stephen23
Stephen23 2021-6-12
编辑：Stephen23 2021-6-12
Do NOT add, remove, alter, edit, or change in any way the files in the MATLAB installation directories!
This is a very odd path, it looks like an installation or temporary installation path:
C:\Users\DELL\Downloads\_temp_matlab_R2021a_win64\bin\win64
A BIN directory is a big red flag, telling you "no, do not work in this directory". As a beginner you should put all of your own files (and any files you download, etc) into the default MATLAB startup directory, which on Windows is:
C:\Users\<user>\Documents\MATLAB
https://www.mathworks.com/help/matlab/matlab_env/matlab-startup-folder.html
You can also save MATLAB files in other locations and change the Search Path to suit:
https://www.mathworks.com/help/matlab/matlab_env/what-is-the-matlab-search-path.html
but NEVER in any installation directories of ANY application installed on your computer.

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