Lizan
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Professional Interests: Spectroscopy, Optics, Image processing, Astrophysics, Space Physics, Oceanography
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Accept 20 answers given by other contributors
Awarded to Lizan on 20 Jul 2017
Feeds
Question
Complex math problem, envelope within an area
Hi, I have a complex math problem and I don't know how to start. I have a rectangular area of certain dimension x mm. Let sa...
plus de 6 ans il y a | 1 réponse | 0
0
réponseQuestion
Image analysis, intensity within a rectangle area
Hi, I was wondering if someone can help me. I have a gray image of certain size (say 400 x 400 pixels) in which I have some inte...
environ 7 ans il y a | 1 réponse | 0
1
réponseQuestion
How to unwrap a signal?
I like to unwrap this vector, I calculated with a cos-function to obtain a nice dip. The figure looks like this: <</matla...
environ 8 ans il y a | 1 réponse | 0
0
réponseQuestion
How can I flip the top area of the peak that is going down?
Hi, I would like to flip the part of the peak that goes gown so its pointed upward. I want there to be a space between the data ...
presque 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How to flip or mirror some vector parts
Hi, I have a data that has flipped on me. I need to correct for this but I am not sure how to do this. The data is in vector...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How to counter drifting data.
I have a dataset that is drifting a bit in time. Is there a way in matlab to counter it? I have data that changes amplitude at t...
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How to correct for a drifting baseline?
How can I correct for a drfiting signal that is slowly declining, (x,y) values?
environ 9 ans il y a | 1 réponse | 0
1
réponseQuestion
How to solve plotting different data in same figure when x-vectors are not the same?
Hi, I am trying to plot 2 data in a plotyy(X1,Y1,X2,Y2) fashion. However the data x1 and x2 does not have the same timescale...
environ 9 ans il y a | 2 réponses | 0
2
réponsesQuestion
Finding indices when the curve stops decreasing
Hi, I have a curve I like to find the maximum and then find the indices under the peak for which it stops decreasing on each...
plus de 9 ans il y a | 3 réponses | 0
3
réponsesQuestion
How to convert hours, minutes, seconds to seconds?
Hi, How can I return an array with hh:min:sec into seconds? For example VarName2(1:5) ans = ...
plus de 9 ans il y a | 2 réponses | 0
2
réponsesQuestion
diary, how to create a new one
I have a .m file I want to save the text at the command window. Next time I run the m-file I want to create a new diary file. Th...
plus de 9 ans il y a | 3 réponses | 0
3
réponsesQuestion
problem with overwritten data when auto saving
I want to auto save certain data based on where they are located in the computer. For example, myFolder = '/Users/user/Docu...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Adding a plot to existing plot.
I have a base plot in which I would like to add a smaller version of a second plot/figure ontop of the base plot at a certain lo...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Add existing figures onto of a new plot without using subplot
Hi, So I have a plot that something with a handle h(1) and h(2) I would like to add 4 more figures onto of the existing f...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Saving figures in m-file
I am processing data and have several m-files at the time that I want to run and autosave .mat and .fig for the file. I use ...
plus de 9 ans il y a | 1 réponse | 0
0
réponseQuestion
Trying to find out when a curve becomes exponential
Greetings, I have a dataset from simulations of curves which I want to find out when this curve becomes exponential or when ...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Area between baseline and data peak
Hi, I am trying to determine the area under a peak curve, see image. The baseline illustrated in image is not zero, and I wo...
plus de 9 ans il y a | 3 réponses | 1
3
réponsesQuestion
Plotting data from struct
Hi, I am plotting data from a struct, for example plot(someStruct.a, someStruct.c) The figure I obtain I can hardly ...
plus de 9 ans il y a | 2 réponses | 2
2
réponsesQuestion
Trying to understand the image matrix
Hi, I have a jpg image and opened it in MATLAB. It has the following size; size(pixImage{1}) = 1024 1280 ...
plus de 9 ans il y a | 2 réponses | 0
2
réponsesQuestion
How to store number of images matrix and double values in cell or array?
I am not to familiar with arrays or cells in MATLAB. I would like to make an array that contains in one cell for image 1, image ...
plus de 9 ans il y a | 1 réponse | 0
1
réponseReading image save as matrix and store filename information
Follow-up question 2: I am not to familiar with arrays or cells in MATLAB. I would like to make an array that contains in on...
plus de 9 ans il y a | 0
Question
Reading image save as matrix and store filename information
Hi, I have X number of images I need to upload and obtain the data stored in the file name for later operations. For example...
plus de 9 ans il y a | 3 réponses | 0
3
réponsesQuestion
Why does my IEEE submission complain with format EPS file generated in MATLAB R2013b
I am getting the following errors, The graphic file is saved in CMYK mode. The graphic file needs to be submitted as RGB or ...
presque 10 ans il y a | 1 réponse | 0
0
réponseQuestion
convert time stamp into minutes or seconds
I have a file with 29.06.2014 09:53:37 -1.8 29.06.2014 09:58:36 -2.0 29.06.2014 10:39:01 -2.0 I...
presque 10 ans il y a | 2 réponses | 0
2
réponsesQuestion
Fitting multiple datasets simultaneously
Hi, I was wondering if there is a way do a linear fit on 2 datasets simultaneously? It seems like you can only do a linear f...
presque 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Finding and plotting the standard deviation of data fitted to a linear curve?
How can I find the standard deviation for data (x,y) fitted to a linear curve?
presque 10 ans il y a | 1 réponse | 0
0
réponseQuestion
Normalisation of data points
Hi, I have a set of data points that has a drift, that is the power is decreasing with time (the line) although the line are...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Splitting a mesh grid and put them together again.
Hi, I need to do a very dense mesh... but my computer cannot handle the amount of data. so I would like to split it into t...
plus de 10 ans il y a | 1 réponse | 1
0
réponseQuestion
Meshing cartesian coordiantes within a circle?
I want to do a mesh with x and y .. but I only want to display the data for a circle with radius r. I don't want to use polar ...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
How to from my vector coordinate to fit my meshgrid matrix?
Hi, I created a meshgrid x, y, which is an matrix of (25, 5) in sixe. Then I rearranged this to r = [ x(:) y (:) ] ...
plus de 10 ans il y a | 1 réponse | 0
1
réponse
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