Extract pixel values inside a Binary Mask
since you already created a binary mask you can just index multiply " .* " the mask with the original image as outside is 0 and...

ungefär 3 år ago | 0

how to color and label only certain histogram bars?
Here is an example for @Adam Danz said with using bar y = randn(100); [N X]=hist(y(:),10); %plot all the data figure,clf,hb...

ungefär 3 år ago | 1

Looking for a matlab script that extracts data from a plot figure ( here 2D contours from Covariance matrix or Markov chains) and reproduce the original figure
your graph is a bit messy with text and lines that denote items. here is a quick example that may push you along. It'll need a...

ungefär 3 år ago | 0

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Scientific notation at y-axis with yticks/yticklabels
from the looks of it the desired state is also plotting in a log10. you can change the current axis by set(gca,'yscale','log'...

ungefär 3 år ago | 0

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Find the indices of the imaginary element of the matrix
you can do a comparison to the real(A) like A=[1 2 3; 4+i 5 6-i; 7 8+i 9] [row col]=find(A~=real(A)) ...

ungefär 3 år ago | 0

How to make the code efficient?
You can do things all at once cine you're not dependent on previous values. n=4 x=[0:n-1]; y=[0:n-1]; k = 0; %%Orig_code ...

ungefär 3 år ago | 1

Double sigma with exception case
in your nested forloop you can put a check in for if j==i then continue. you do have a check up there with i~=j which should w...

ungefär 3 år ago | 0

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to get your started you can see that the tissue and the shadow area have similar values in all the color channels. you can do a...

ungefär 3 år ago | 0

How do I plot the upper view of a matrix and represent the intensity color?
Here is an example of what i'm thinking you're doing. Not sure what you're doing with the weighted average but i think i did so...

ungefär 3 år ago | 1

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How to vertically and horizontally scan an image to store a coordinates (positions) of the elements having values other than 255.
do you need to "scan" in a for loop or are you just looking for the positions of the colors? if you don't need to scan in a for...

ungefär 3 år ago | 0

How to plot an equation qith specific data range?
For this you can use the function ylim() clc clear x=0:5:100; y=3*x+10; y1=4*x+5; plot(x,y) hold on plot(x,y1) ylim([25...

ungefär 3 år ago | 0

How to include function in legend
do you need to use latex as just using the default tex? as latex uses \$ for markup of symbols i don't know if it'll take the sy...

ungefär 3 år ago | 1

Having trouble with looping through fields in a struct
primarily its because of the data.t = zeros(length(list)); data.p = zeros(length(list)); where you've set the t and p to be ...

ungefär 3 år ago | 0

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how to add a label to a contourf plot next to colourbar?
you can set a ylabel by passing the colorbar handles into ylabel [X,Y] = meshgrid(1:12,1:24); Z = sin(X) + cos(Y); figure(1),...

ungefär 3 år ago | 1

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Plotting streamlines from a dataset (x,y,u,v)
So, meshgrid generates a grid of x and grid of y values so index wise you get the xy pair-combo. usually very useful when you're...

ungefär 3 år ago | 2

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Change variables in for loop
That is because you're evaluating a string in that inpoly and not the variable x_e#... ideally you wouldn't want to do the evalu...

ungefär 3 år ago | 0

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hello everyone. How to make the direction of points drawn on Cartesian coordinate system consistent with that drawn on binary image.
in a displayed image (0,0) is top left corner but cartesian is bottem left if in the ++ quadrant. so remedy this you can set th...

ungefär 3 år ago | 0

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Help sketching equation into 3d graph
what you'll need to do is use the function meshgrid() which will then create a 2D matrix for both x and y such that you can get ...

ungefär 3 år ago | 1

Bars disappear with log scale
While not ideal this should get you by since bar tries to plot the bar all the way to 0 which log scales don't show y=randi(100...

ungefär 3 år ago | 0

pre-define a struct/array of structs in attempt to get rid of out of memory error.
the pre-allocation can be done (though can't really find the right way ultimateR = []; temp = struct('name',[],'size',[],'resu...

ungefär 3 år ago | 0

Solved

Implement simple rotation cypher
If given a letter from the set: [abc...xyz] and a shift, implement a shift cypher. Example: 'abc' with a shi...

mer än 3 år ago

Using get and set command to add a title, xlabel, and ylabel?
You can take a look by first extracting out the current axis or assign it to a variable: figure(1),imagesc(randi(10,10,10)) ha...

mer än 3 år ago | 0

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HDFread and hdfinfo on modis data
Answer to this after brute forcing looking at all named values. attributes that should have been pulled from just reading in si...

ungefär 4 år ago | 0

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Question

HDFread and hdfinfo on modis data
I appear to be missing some fundamental understanding of hdfread and hdfinfo for MODIS hdf data files (note not hdf5 files). ...

ungefär 4 år ago | 1 answer | 0

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Two-dimensional colormap
I'm puzzeled by your first portion and the need for a for loop. unless you have a hold somewhere the images shouldn't be stackin...

mer än 4 år ago | 1

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how to know if a char vector contains unwanted characters?
check out the function ismember here is snippet of test code x=["0","1","2","3","4","5","6","7","8","9","."]; y = ["3","3","5"...

mer än 4 år ago | 0

How can I splitt up a big matrix into smaller matrises, splitting it up by values on the x-axis
so the main question is whether the ranges for the smaller matrixes are known or need to be detectable. then you can use a for ...

mer än 4 år ago | 0

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How can I convert a YCbCr image to 4:2:0
while you're probably not going to implement this in simulink but take a look at https://www.mathworks.com/help/vision/ref/chrom...

mer än 4 år ago | 0

How to plot a region in a Matlab plot?
here is quick example of what you can do by putting the regions as an image under the plots: %gen xy spans temps=0:.1:100; ...

mer än 4 år ago | 0

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