Matlab

remove horizontal shifts in image
I would like to remove shifts in horizontal image lines that arise from oscillations in the object. The images are SEM type, obtained via linescans that can vary from 20 to 120 seconds for the full scan. Pixels are 1024 by 788 in the 8-bit image. These can be jpg or tif format. This is a 'registration' problem I believ... 23 Jul 2010 12:31

trying to understand uint32, single or int16
Hello Guys, somebody can explain when I have to use uint32, single or int16, see code below...thanks in advance: function [sdata]=makesdata; global sdata %function [sdata]=makesdata; %creates a dummy structure sdata sdata.ptsperchan=0; sdata.usperadc=single(0); sdata.stimtype=0; sdata.datasize=0; s... 23 Jul 2010 15:48

not a valid symbolic expression
Hi I have TL9<1*39cell>which contains TL9{:}= ans = '1/cgs2+s*cgs2+(s*5)/(1+s*4*7)+s*cgb2' ans = '-1/7' ans = '-gm2' etc of class(ans) ans = char another cell array TL3<1*47>which contains TL3{:} ans = [ empty sym ] ans = gm2 ans = cgs2 etc of class -sym; and third TL4<46*1>which contains TL... 23 Jul 2010 15:49

Simulink example program about boiler drum level
Hi, I would like some information about the example program can be found in the simulink help menu, called : Regulating Pressure in a Drum Boiler. I would be interested about the type of boiler is modelled and the origin of the used equations (steam tables) within the model. Is there a reference or a bibliography... 26 Jul 2010 10:31

Using static pointers to MATLAB object in mex-file.
Greetings to all, My question is "How can I assign a C pointer to a MATLAB object's property? (And not to a copy of the property)." Here are the details: I'm currently working on a project where I create MATLAB objects to store my data and use mex-files to create matrix from the objects and do the calculations I... 26 Jul 2010 10:31

Is there something faster than strread?
hey, I am running a very data intensive project that requires parsing through very long text files and picking out information. To accomplish this, I have been using fgets to go line by line through the file and to look for this information with strread. However, this process is being very slow and it seems to be du... 24 Jul 2010 19:53

Regexp IF statement
Dear Nicholas, Using perl, I'm able to detect if a regex matches by doing an if statement - is this possible in MatLab, or would I just need to check if the results are empty? In Matlab if <expression> is equivalent to if all(reshape(<expression>, 1, [])) && ~isempty(<expression>) (Am I right? It looks... 23 Jul 2010 11:23

Regexp IF statement
Hi, Using perl, I'm able to detect if a regex matches by doing an if statement - is this possible in MatLab, or would I just need to check if the results are empty? Thanks ... 23 Jul 2010 11:23

Get matrix position based on coordinates
Does anyone know how I can find out what position a particular entry in a matrix is at, according to its coordinates? For example, I know that the value is in A(2,3), but I need to know what position number in the matrix this is (i.e. position 23). Thanks! Jack ... 23 Jul 2010 11:23

Sort cell array
Hi, I would like to sort a cell array which contains names with letters and numbers. Here is a example : X = {'S1', 'H2', 'S3', 'H4', 'B6', .... 'H5'} When I use the fonction "sort", the sorting is made according to the letters in front of the numbers. This is not what I want to do. Is there a way to sor... 23 Jul 2010 11:23