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Question
skip data when reading binary
I have a binary data file, and I am reading it as such. fileID = fopen('2016.06.27_15.12.07_1.A.bin'); SDDdata = fread(f...
ungefär 8 år ago | 1 answer | 0
1
answerQuestion
Improve performance of linspace
I am needing to greatly improve the performance of a line of code. I need to run this line of code millions of times. But it cu...
nästan 9 år ago | 4 answers | 0
4
answersQuestion
fill region with minimum number of rectangles
I have a image/matrix as shown in the attached picture. <</matlabcentral/answers/uploaded_files/35561/temp.jpg>> My goal...
ungefär 9 år ago | 1 answer | 0
1
answerHow to generate a sine signal with changing frequency, but with predetermined number of elements and periods?
Try this: http://www.mathworks.com/matlabcentral/fileexchange/41088-variable-frequency-sine-wave
ungefär 9 år ago | 0
Issue with "Unexpected MATLAB operator"
Without any code or more info, nobody can really help you.
ungefär 9 år ago | 0
Question
Outline polygon with square region
I have a polygon image(mask, 0's and 1's). Let us pretend it is a octagon of width 200 pixels in a 500x500 pixel image. I wa...
ungefär 9 år ago | 1 answer | 0
1
answerHow do I reverse the y-axis in image?
Alternatively, you can flip the array. Either fliplr or flipud Flip Left-Right, or Up-Down, depending on how your data is. ...
nästan 10 år ago | 2
random number generator to two different variables
They get different random numbers for me. Which version of Matlab are you using?
nästan 10 år ago | 0
| accepted
Question
Fast sorting data to Lissajous Curve
Hi community. I am trying to ascertain the quickest way to sort data to a Lissajous pattern, as I want to perform this in real t...
nästan 10 år ago | 0 answers | 0
0
answersHow to reshape an array into 3 different matrix with different sizes?
It looks like you just want to split the array up. A=[1 2 3 4 5 6 7 8 9 4 5 3 5 3 2 5 4 2 4 7 5 ]; subData1 = A(1:...
nästan 10 år ago | 0
| accepted
Question
Sending/recieving data via UDP
I am trying to make a program listen for data coming via UDP, and do stuff. So I am working on a UDP listener. I am then runni...
nästan 10 år ago | 0 answers | 0
0
answersMetric on how much to movie image to overlay
I found the function imregtfrom, which is the numerical output of the imregister function, not just the resulting overlayed imag...
nästan 10 år ago | 0
| accepted
Question
Metric on how much to movie image to overlay
I am trying to overlay two images. I can successfully do that using imregister. I want some metric values out of this process th...
nästan 10 år ago | 2 answers | 0
2
answersQuestion
Orientation using regionprops and getting orientation at each pixel
I am trying to use regionprops to find the orientation of objects/pixels in an image. I will then use this data for further calc...
ungefär 10 år ago | 0 answers | 1
0
answersQuestion
Fast comparison of values in array
I am using a data acquisition card pulling in data at MHz rates. I am needing to do a comparison of this data and threshold it. ...
ungefär 10 år ago | 0 answers | 0
0
answersQuestion
Network listener (TCP, UDP, etc)
I need to create a TCP, or UDP, listener. That is, I need it to just sit around and listen and wait for a command to come in, a...
mer än 10 år ago | 2 answers | 0
2
answersHow can i use th linspace function to to create a vector ‘v’ containing all positive even numbers less than 21. i.e. [2 4 6 8……..]
A = 0:2:21;
nästan 11 år ago | 0
Question
UDB background listener program
I need to create a UDP background listener that will listen for commands to come on over a UDP port, and when commands come in, ...
nästan 11 år ago | 0 answers | 0
0
answersQuestion
Making image transparent for overlaying
I have a couple of images that I am using the imregister function from the Image Processing Tool Box. I have it working great. H...
nästan 11 år ago | 1 answer | 1
1
answerI made a 2D color plot, how do I turn the plot into an animation or video of the points being put into place? Thanks
The comet function is also quite nice. X = sin(0:.01:2*pi); comet(X) %or X = sin(0:.01:2*pi); Y =...
ungefär 11 år ago | 0
Question
Increasing speed of indexing
Hello community. I have a whole bunch of data (real data is being acquired and processed while running). In this example file, ...
ungefär 11 år ago | 0 answers | 1
0
answersQuestion
Load DLL error (64bit dll, 64bit Matlab, Win32 error)
Hello community! I am new to DLLs and all that crazy stuff, but I am trying to learn and use one. Specifically, I am trying to...
mer än 11 år ago | 0 answers | 0
0
answersQuestion
colorbar position on imageplot with multiple figures
I have an image plot with two figure on it. When I add the color bar, with whatever location parameters I used, it uses those l...
mer än 11 år ago | 1 answer | 0
1
answerimshow update in realtime, colorbar causing it to slow down
Yes, I had been doing the set handle for making other things more efficient. I did not think that would make this more efficient...
mer än 11 år ago | 0
Question
imshow update in realtime, colorbar causing it to slow down
I am updating a display ~15 times a second using imshow. I want to display the colorbar on the side, but that seems to slow dow...
mer än 11 år ago | 2 answers | 0
2
answersQuestion
Bin data to sinwave
Is there a easy and computationally efficient way to group data according to a sin wave? So say I have 20,000 data points, that...
mer än 11 år ago | 0 answers | 0
0
answersMake imshow more efficent
Walter Roberson When I do it that way, the image is not updated though. Before loop (y is just initial data) di...
mer än 11 år ago | 1
Question
Make imshow more efficent
I currently have in my code a imshow command, then followed by drawnow. My program is processing data from a acquisition card a...
mer än 11 år ago | 2 answers | 0
2
answersQuestion
GUI access data from other callback functions
So, I am following some of the examples like I found on the internets. But I just can not seem to access data/variables set by o...
ungefär 12 år ago | 1 answer | 0
1
answerQuestion
GUI close open images
I would like to create a button that closes all open images. If I use the 'close all' command, it closes the GUI as well. Can I ...
ungefär 12 år ago | 1 answer | 0