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mahesh chathuranga


sabaragamuwa university of sri lanka

Attivo dal 2013

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find a maximum matrix of three matrices
I have three matrices. A=[8,1,6;3,5,7;4,9,2], B=[6,7,2;7,4,8;1,2,3], C=[4,8,5;3,2,1;1,1,1], . I want to find the maximum of A,B ...

quasi 9 anni fa | 1 risposta | 0

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Domanda


MATLAB regression tree analysis
0 down vote favorite I have five different images, size is 9000rows and 9000columns. I want to calculate the index using ...

quasi 10 anni fa | 0 risposte | 0

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Domanda


how to write a headerless flat binary file into tiff using matlab
I have header less flat binary files(they have no extension). I want to convert those into tiff. is it possible with MATLAB

circa 10 anni fa | 1 risposta | 0

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Domanda


How to write matrix to text with comma separate but first column should be string
i have a matrix with four columns. all values are numbers.I want to write it on text with comma separate row by row.but first co...

circa 10 anni fa | 1 risposta | 0

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Domanda


replace -28672 with NaN
I have MODIS image, fill value is -28672(No data area). I want to replace those as NaN. why I am doing this is, I dont want to u...

oltre 10 anni fa | 1 risposta | 0

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Domanda


link scatter plot to the image
I have an image(500*500) and I calculated two images from the original image, those derived images(a and b) contain the calculat...

oltre 10 anni fa | 0 risposte | 0

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Domanda


problem with image data classes
I opened the raw image(int 8).I wanted to stretched the raw image values from 0 to 1. for that i used mat2gray(). then I applie...

oltre 10 anni fa | 0 risposte | 0

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Domanda


for loop for read different band of image and apply the calcilation on it.
I have large data set of satellite images. seven bands of a one location(tile) are stored in separate tif images. I have the dat...

oltre 10 anni fa | 0 risposte | 0

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Domanda


what is this error?
When I run the SPI calculation function this error was displayed. function=" *Z=SPI(Data,3,12)* ;" error=" * *Maximum recu...

oltre 10 anni fa | 1 risposta | 0

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Domanda


how to use fourier transform to analyze time series data?
I have an time series signal.I want to calculate first,second,third harmonic curves according to the following research paper, u...

oltre 10 anni fa | 1 risposta | 0

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Domanda


export comma separated values to excel
[pks,locs] = findpeaks(A) it gives two values for pks and locs. pks= 23 56 locs= 2 5 i want to save this output into a excel...

oltre 10 anni fa | 2 risposte | 0

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Domanda


how to export multiple matlab variable outputs to excel sheet?
I have number of data sets and each data set gives 5 output values(NDVImean,NDVImin,dNDVI,t,sen) I attached a excel sheet for o...

oltre 10 anni fa | 1 risposta | 1

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Domanda


how to read projected image into matlab
I have MODIS time series 23 images for particular tile.i want to do time series analysis using this images.But this images are w...

oltre 10 anni fa | 0 risposte | 0

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Domanda


how get log normal(ln) of value?
i want get the log normal(ln) of the value.how to do it?

oltre 10 anni fa | 1 risposta | 0

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Domanda


how to get the mean of different images covered the same area?
i have 7 days precipitation data images(tif format)of same area.i want to get the average of this seven images.(pixel wise avera...

oltre 10 anni fa | 1 risposta | 0

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Domanda


How to run program with .tmp extension in matlab
i have an program with .tmp extension. i want run this on matlab environment. how to do it?

oltre 10 anni fa | 1 risposta | 0

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Domanda


Image Processing tool box
by type wavemenu we can access to the wavelet tool box. how can i access to the image processing tool box.

oltre 10 anni fa | 1 risposta | 0

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Domanda


How to mosaic two images with out overlapping
I have a two images like this.as a example a=[1 1 1 1;1 1 1 1;1 1 1 1;1 1 1 1]; b=[0 0 0 0;0 0 0 0;0 0 0 0;0 0 0 0]; (actual ...

circa 11 anni fa | 1 risposta | 0

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Domanda


convert .dll extension type code to matlab codes
I have some codes with *.dll* extension.I want to convert it to *MATLAB* format.How to do it? Thanks!

circa 11 anni fa | 1 risposta | 0

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Domanda


How to get summation of images
I have three images ( contrast feature,cluster prominence & cluster shade) with same size(0-255 range).I want to get the summati...

circa 11 anni fa | 1 risposta | 0

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Domanda


wavelet sub band uniform quantization
How to do the uniform quantization for wavelet sub bands?

circa 11 anni fa | 0 risposte | 0

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Domanda


how to do quantization
I have wavelet coefficients bands.I want to quantization this coefficients using quantization function derived by Andrew Busch.h...

circa 11 anni fa | 0 risposte | 0

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Domanda


Get average GLCM of image
I have an image with size 256*256(8bit).I want to calculate Gray level co_occurrence matrix to 4 directions(8 directions with sy...

circa 11 anni fa | 0 risposte | 0

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Domanda


convert matrix into another matrix
a=[0 0 1 1; 0 0 1 1; 0 2 2 2; 2 2 3 3] this is my matrix and i want to obtain b=[1 1 0 0; 1 1 0 0...

circa 11 anni fa | 1 risposta | 0

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Domanda


how to do logarithmic image normalization?
what is logarithmic image normalization?how to do it?(range is 0-255)

circa 11 anni fa | 2 risposte | 1

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Domanda


imgradient() function in matlab 2013b version
What is the similar function to *imgradient()* (in 2013b version) in old matlab versions(2009 version...etc)

circa 11 anni fa | 1 risposta | 0

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Domanda


error message when using graycomatrix()
comatrix = graycomatrix(imgray_in((row - ((window_size -1)/2)): (row + ((window_size -1)/2)),(col - ((window_size - 1)/2)):...

circa 11 anni fa | 1 risposta | 0

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Domanda


image manipulation with moving window.
i have a image of 256*256 and i have a moving window with (5*5).i want to move this moving window through out my original image,...

circa 11 anni fa | 1 risposta | 0

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Domanda


how to multiplying two matrices in following way
my first matrix is a=[1 2; 3 4; 5 6];.my second matrix is b=[3 5; 0 2; 5 7];. I w...

circa 11 anni fa | 1 risposta | 0

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Domanda


sub divide the image with overlaps
my image is a = [0 0 1 1; 0 0 1 1; 0 2 2 2; 2 2 ...

circa 11 anni fa | 1 risposta | 0

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