Answered
identifying positions of a string within a text file
Lots of ways. This one uses regular expressions: mystr = 'line $$ 1 $$ line 2' newstr = regexprep(mystr,'\$\$','New_Stri...

14 years ago | 0

Answered
over lap image onto another image??
Consider: a = magic(7) b = rand(2,3) a(3:4,4:6) = b % Or, more generally,: startrow = 3; startcol = 4; ...

14 years ago | 0

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Answered
Image Processing (related to image comparison)
Once you've segmented your regions of corrosion, the function REGIONPROPS will be quite useful!

14 years ago | 0

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Issue with fractional step-sizes
y(1) refers to the first element of y. y(2) is its second element. What does y(1.5) refer to? Your problem is in your use of ...

14 years ago | 1

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Segmenting using X-Y co-ordinate axis
XY coordinates are non-standard (in MATLAB) for displaying images. But non-standard doesn't mean "not doable." Using the AXIS XY...

15 years ago | 0

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to plot different graph in a single window
If you want to plot IC vs VCE _and_ IB, you might want to consider using PLOT3 or SURF. Or some other 3D visualizer. Brett

15 years ago | 0

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How do I increase the speed of a line plot?
Daniel, Withoug seeing your code, it's difficult to guess what's causing the slowdonw. But try using LINE instead of PLOT. I ...

15 years ago | 1

Answered
How to plot navigation points on an indoor floorplan
Look at the <http://www.mathworks.com/access/helpdesk/help/techdoc/ref/quiver.html QUIVER> command (and HOLD ON, of course). Tha...

15 years ago | 1

Answered
How to find direction (directional vectors) of a moving object in a video?
The Video and Image Processing Blockset provides <http://www.mathworks.com/access/helpdesk/help/toolbox/vipblks/ref/opticalflow....

15 years ago | 0

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Cursor line
I would create a line object for each axes, and use <http://www.mathworks.com/access/helpdesk/help/techdoc/ref/linkprop.html LIN...

15 years ago | 1

Answered
Reading a txt file with different number of rows for each column
Noga, Read the <http://www.mathworks.com/access/helpdesk/help/techdoc/ref/textscan.html doc for |textscan|>. There's a section ...

15 years ago | 0

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Random Corner Patches
Harris corner detection is the default for the Image Processing Toolbox function <http://www.mathworks.com/access/helpdesk/help/...

15 years ago | 0

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what is the difference between image and imshow ?
|image| is a MATLAB command that visualizes your matrix as simply a matrix of numbers. The colors used to represent each value m...

15 years ago | 9

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Answered
Apply Zoom in other axes
See the help for <http://www.mathworks.com/access/helpdesk/help/techdoc/ref/linkaxes.html LINKAXES>. Cheers, Brett

15 years ago | 1

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Answered
box counting to boundary
Damodara, There are no MathWorks-supported functions (Toolbox or otherwise) that I'm aware of for box counting. There are, ho...

15 years ago | 0

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Select axes for zoom in/out
img = imread('cameraman.tif'); f = figure; ax(1) = subplot(1,2,1); imshow(img) ax(2) = subplot(1,2,2); imshow(i...

15 years ago | 1

Answered
Problem with origin and plotting axes
Is this what you're looking for? >> x = [-0.5 0.5 0.5 -0.5]; >> y = [-0.5 -0.5 0.5 0.5]; >> plot(x,y,'ro') >> axis...

15 years ago | 0

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Answered
Day of year to month
How about this? D = datevec(datenum(1992,1,1:1/24:365, 0,0,0)); Cheers, Brett

15 years ago | 0

Answered
Inserting numbers into a vector
Michael, See if you can figure it out from this response: <http://www.mathworks.com/matlabcentral/answers/1085-inserting-a-c...

15 years ago | 0

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Answered
inverse Fourier transform
Look at the dimensions of your z matrix. (size(z)). Then make sure the number of x values matches the first dimen Consider: ...

15 years ago | 0

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Answered
Accessing Hyperspectral Images Using MATLAB
If the images are stored in .mat files, you should be able to LOAD them with core MATLAB--no special Wavelet-reading functions n...

15 years ago | 1

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Answered
Create workspace file automatically.
I think you mean "variable," not "file." Right? for ii = 1:numel(a) eval(sprintf('%s = %d',a{ii},b(ii))); end Chee...

15 years ago | 0

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Answered
Day of year to month
If you have 365 days, for instance, but no month information, you can simply increment the DAY position in datenum: mydate...

15 years ago | 0

Answered
Determining whether a point on earth (given latitude and longitude) is on land or ocean
I think this will do it. It is a binary classifier: Ocean/Land. coast = load('coast.mat'); [Z, R] = vec2mtx(coast.lat,...

15 years ago | 2

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finding a closed region
Create a mask of your regions (blobs). Then use the fourth syntax of <http://www.mathworks.com/access/helpdesk/help/toolbox/imag...

15 years ago | 0

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Answered
finding the length of a pendulum in motion
property = regionprops(lab,'Centroid') returns a struct, the fields of which correspond to each ROI (blob) in lab. To convert th...

15 years ago | 0

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Answered
.Fig to .m file
Lina, From your GUIDE-built GUI, pull down from the File menu to EXPORT. That should generate a MATLAB file that will recreat...

15 years ago | 2

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executable file without supporting file?
When you build your application (using Deploytool, for instance), you will need to provide hard links to the supporting dll's. T...

15 years ago | 0

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feature extraction
Hi Shiwani, I frequently present an advanced image processing course with coin recognition as the over-arching goal. Here are...

15 years ago | 0

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Answered
Is there some function in Matlab with which I can dilate only a small ROI in the image?
Actually, it doesn't really matter how the ROI is defined, nor what shape it is. The function <http://www.mathworks.com/help/too...

15 years ago | 1