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index out of bounds
juju defines the intervals between sections. With 8 intervals, you define 7 sections. It fails when trying to get the 8th sectio...

casi 13 años hace | 0

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Slow Triple for loop
1. Do the calculations as few times as possible: The following should be in the outer loop. - Unless you want latcounter to be a...

casi 13 años hace | 2

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make a GUI for an existing programme
You can make a gui do almost anything, if you're willing to put in the effort to make it work the way you want it to. "guide" is...

casi 13 años hace | 0

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initialising a color map
image_dat = uint16(randn(1024,1280)*5+5000); % random image (single colour channel) imagesc(image_dat) % display it colorbar ...

casi 13 años hace | 0

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saving an variable into matlab for future use
Use cell arrays: variable{1} = 4; variable{2} = 'String'; variable{3} = 'D:\filehere\hi.wmv'; variable{4} = yourloadfu...

casi 13 años hace | 0

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dynamic variable names in a loop
Thats a really bad idea. x={}; %real code loop starts here %pseudocode stuff = your input function that gets an input %...

casi 13 años hace | 0

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if statement gives wrong results or does not work?
"any" and "all" are your friends, You have actually written if ALL of a >= a_sat set "b" else, if ALL of a < sat ...

casi 13 años hace | 0

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Plotting multiple days on one graph
Plot the times as date numbers (check the documentation for "datenum") Change the x axis labels to the "datestr" with something...

casi 13 años hace | 0

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finding values from matrix
A = [45 46; 42 43]; logical_address = A>45; A(logical_address) %gives you a single 46. linear_index = find(logical_addr...

casi 13 años hace | 0

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How can I generalize this for loop?
Whats wrong with? t = cumsum(d)/total;

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Generate variable names and assign them to workspace variables
This is the answer to the question you've asked: generated_variable_name = 'Big_whatever'; %(needs to be in your working wor...

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How can I findout mean,standard deviation and variance using hiatogram of an image
Easier to do that straight from the image: my_image = uint16(randn(128,128)*16383); std_of_my_image = double(std(my_i...

casi 13 años hace | 0

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How can I get 2 signal differences in log scale?
You can get the ratio between the power levels simply by taking dB1 - dB2. This is probably more sensible unless the numbers are...

casi 13 años hace | 0

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Can I determine iteration number which matlab executes?
count = 0; while dx~=0 .... .... count = count + 1; end

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Generating random numbers from normal distribution
If you take a random number from a gaussian (aka normal) curve, you can calculate the probability that number would come up. ...

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how to maintain continuity and periodicity of a function
Try ensuring that your fit wraps around - ie, that you give it x = 366 and y = the value it has when x = 0.

casi 13 años hace | 0

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Access elements/fields from a struct
Sounds like you have something like: b = dir('C:\Windows\'); b(1) names = fieldnames(b(1)); for i = 1:numel(nam...

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Does in-equality operators work in comparison of two time format?
You have your brackets in the wrong places. (datenum(time_e_rad(j,:))< datenum(upp_lim)) && (datenum(time_e_rad(j,:)) >= d...

casi 13 años hace | 1

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Why is GUIDE not allowing me to have one (1) column and three (3) rows in my table? It seems as if the default table is 4 x 2
In your workspace, generate the default contents for the table. Set the data on the table to that.

casi 13 años hace | 0

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Indexing problem - how to obtain row and column and use later
whereAequalszero = A ==0; B = A; B(whereAequalszero) = 4;

casi 13 años hace | 0

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how to plot y=ax+b for different equations
x = min_desired_x:step_size:max_desired_x; y = (x>0 & x<=1) * 1 + ... (x>1 & x<=3) * (2*x+1) + ... (x>3 & x<=5) *...

casi 13 años hace | 0

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How to impute missing values using mean for a table
Use nansum, or nanmean, as required.

casi 13 años hace | 0

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Hyper Image intensity level
You need to know the bit depth of each "slice" of your hypercube. (We can't tell you this, but its normally 8 bit for a standard...

casi 13 años hace | 0

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Given an array of data, is it necessary to use FFT to get the amplitude?
Try plotting it and seeing what that tells you... (max(2nd column) - min(2nd column))/2 might make most sense ;)

casi 13 años hace | 0

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Breaking up a matrix/array
codes = matrix(:,1); code_list = unique(codes); for i = 1:numel(code_list) new{i} = matrix(code_list(i) == codes,:); e...

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subtract numbers in the row
diff(x)

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change variable and assign to dataset in each loop
Three approaches for i = 1:12 %(Sheets not the same size) [numbers{i} texts{i} raws{i}] = xlsread(....); end Or ...

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How to check the value of a varriable of a subfunction?
You can use the command line option dbstop if error Or you can insert breakpoints inside your function to inspect (or c...

casi 13 años hace | 0

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Preallocating memory for a matrix of unknown size
At what point do you know the required size? If it's "at the end", then you do have to do with the "arbitrarily big" option, ...

casi 13 años hace | 4

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Create a blank m-file by command lines
fid = fopen('D:\myfileshere\newfile.m','w'); fclose(fid); That will in fact create a new "m" file.

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