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But what if you want to replace the values? m(any(m ==0,2),:)=[1 1 1]; This doesn't work, I get a dimension mismatch problem. ...

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Posted 4 years ago

us, very cool. If you want to get rid of any row that has 0's in it m = m =

Bruno, Is there any reason that I would get different values for the output of histcn max(loc) and size(count)? I have not had...

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Responded 4 years ago

Thank you Bruno... The extreme speed up I see using accumarray may negate the need to bin all of the index values for storage. ...

Thank you very much Bruno, and others, for giving your advise... I had all of the resources to accomplish number 2... haven't ...

Bruno... I can't believe I missed the funcitonality of histcn and accumarray!! This definitely gets me closer to my ultimate re...

I understood, and appreciate your help. accumarray it is!! I'll post my solution when I figure this function out. Anthony

Bruno or anyone that has looked through the thread, I'm beating myself up here... I just can't see through to the end. Histcn ...

I feel like I am sooo close.... My issue is with finding the intersection between 3 sparse logical matrices idxr, idxa, and id...

So I think a couple lines fixed the problem: %%%%%% bin_size = 100; r_bin_max = ceil((((nanmax(double(r_4d(:))))))/bin_size); r...

Thank you Matt and Bruno!! I apologize for not staying with this topic, but I have quite a bit on my plate... and I am taking y...

Thank you for your help, I apologize for my slow learning... you guys really are very good! Anthony

Sorry to "double" post this (seems to fit here much better than the other thread)... but I think I am starting to see the light ...

Bruno, I think you are right on with your statement "It seems you are trying to visualize what HISTN does in term of geometry, ...

Bruno, I had downloaded your histcn function at one point to try and understand how it could be applied to my problem, but I mu...

I have two questions concerning the above and something else that goes to the above 1. I am curious about the best way to build...

Matt, that is a very good point. but I use the index values to pick out points in a 3d xyz data structure, add them and replace ...

Bruno, That is a solid!! And you are right, transpose and it screams. Thank you again!! Anthony

Latest problem.... I have a matrix NxM that is N indexing vectors. Some of these vectors have very few index values, but they ...

I screwed up the code: npa = 1.3; bwaz = 2; az1 = 0; gamma = az1+(bwaz/cosd(az1)^npa)/2; solve('az2 - (bwaz/cosd(az2)^npa)/...

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here is the code: npa = 1.3; bwaz = 2; az1 = 0; gamma = az1+(bwaz*cosd(az1)^npa)/2; solve('az2 - (bwaz*cosd(az2)^npa)/2 - ga...

I am trying to replace the following code: [rix riy riz] = ind2sub(sampbox,randi(myrandistr,prod(sampbox),SPtemp,1)); where sa...

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Xiong, It looks like Bjeorn basically did this... except he calculated the pol2cart transform in the last line starting with Da...

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Responded 5 years ago

Actually, while this is a nice process, is there any way to just modify idx without having to create the SubMx? I can see how t...

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Matt, this is essentially what "find" does right? the example I gave above was simplified too... I am doing a 3 dimension logi...

Here is the issue I am having. I have an mxn matrix, that is very large. I would like to use the find command but it is pretty...

Walter, sorry to bother you again, but could you please help clarify something for me? I must have messed up when pasting (abou...

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Walter, I'm having some trouble with the code. first off the matrix you use for A is actually the index matrix right? Also fo...

Walter, Thank you, I'll play with this sample code... this is pretty tricky and a nice use of ind2sub and back that I would nev...

Sorry for the confusion. The example of matrix idx should be (1,:)...(5,:) where each idx row is a vector of index values from ...

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