# Christiaan

### TUM

Bachelor Applied Physics at the University of Twente (completed)

Master Aerospace Engineering at the Technical University Munich (completed)

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**Content Feed**

code for steganography using sparse modeling...

Dear Mr Kaushal, What you could do (as a start) is have a look at <http://www.mathworks.com/matlabcentral/answers/65679-image...

6 years ago | 0

| accepted

Algorithm that Matlab uses for computing eigen values and eigen vectors

Dear Sir, Please have a look at the <http://www.mathworks.com/help/matlab/ref/eig.html documentation> Here you can find th...

6 years ago | 0

How to compare in a function definition?

Dear Mr or Sir, Here is an example how you could compare the matrix and use either a true or false variable for replacement. ...

6 years ago | 0

flipping the plot, keeping axis same

Dear Lakhani, What you could do (as an example) try is the following: x=1:10; y = x.^2; plot(x,y);hold on; plot...

6 years ago | 1

| accepted

How to do an elevation 3d plot with maps given latitude and longitude and altitude?

Dear Yashvin, What you may could try is to use a a custom made file for the file exchange: * http://www.mathworks.com/matl...

6 years ago | 0

Java Error when using FX button

Dear Sir, Madame, The "NoClassDefFoundError" error is thrown because MATLAB was not able to locate Java Runtime libraries tha...

6 years ago | 1

| accepted

Linear Fit and Axes Labeling

Dear Suyapa, There are may possible ways to plot a linear fit in a scattered plot (with least squares for example). This is a...

6 years ago | 0

Insert row in a text file-formating issues

Dear Ionut, What you could do is use the import gui tool in MATLAB for importing text files. With this tool, you can determi...

6 years ago | 0

Plotting the Contour of the Solution of the Laplace Equation

Dear Jack, In the code below, you find a small code that could help you to plot your the laplacian function. However note...

6 years ago | 0

Normalization Of color spaces

Dear Sir, If I understand you correctly, you want to normalise a color map. Therefore you may could use this code (as an exam...

6 years ago | 0

How to implement sub-pixel linear interpolation in matlab?

Dear Sir, What you could do is defining a starting point in a grid, then draw a line and find all intersections points. Once ...

6 years ago | 0

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How to upload a huge text file of (20 lack *100 ) size matrix into matlab

Dear Navan, You could have a look at <http://www.mathworks.com/help/matlab/large-files-and-big-data.html this documentation w...

6 years ago | 0

| accepted

Best way to time different signals

Dear Mathias, I hope this piece of code can help you on your way. You may have a look at it. The only point where you wo...

6 years ago | 0

How to make a parallelogram grid in matlab?

Dear sH, What you could do is use the customgrid function from the file exchange: http://www.mathworks.com/matlabcentral/file...

6 years ago | 0

"Initial conditions solve failed to converge" Error

Dear Asyraf, My guess would be that your op-amp can not be modelled in this way due to a modelling error. I would suggest the...

6 years ago | 0

| accepted

how can transform a matrix into file .txt??

Dear Sarah, In <http://www.mathworks.com/matlabcentral/answers/4175-how-to-save-a-matrix-as-text-file this link> you find the...

6 years ago | 0

Which information do we get from phase spectrum about an Image?

Dear Ramdas, Computing the 2-D Fourier transform is mathematically equivalent to computing the 1-D Fourier transform of all t...

6 years ago | 1

Simple algorithm Exponential weighting

Dear Thijs, This code may help you on your way: A=1; for i=1:10 if i==1 x(i) = 1; end if ...

6 years ago | 0

| accepted

AR spectra for AR coefficients

Dear Sir/Madame, The ARSPECTRA function is unknown in the <http://www.mathworks.com/help/search.html?qdoc=ARSPECTRA&submitsea...

6 years ago | 0

display image imread imshow

Dear Dija, You can find the answer <http://www.mathworks.com/matlabcentral/answers/38498-error-in-imshow#answer_47982 here>. ...

6 years ago | 0

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Unable to install real-time windows target

Dear Kumar, As from MATLAB R2015a Real-Time Windows Target™ is now called Simulink® Desktop Real-Time™. Please first check i...

6 years ago | 1

| accepted

sir,How i can extract a single leaf excluding its background of that stem..???

Dear Siddha, This could be a way to get your result: # Detect all the objects in the image. (<http://www.mathworks.com/di...

6 years ago | 0

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Not enough input arguments. Need help please.

Dear Muhammad, It seems that the function "feature1" needs more then two arguments. If you type in the MATLAB prompt: >...

6 years ago | 1

how can i convert the video into frames and take snapshots of selected frames

Dear Sondhi, You can use the "read" and "imshow" function to plot two frames. Instead of mmreader, VideoReader is now used....

6 years ago | 0

Input signal power AWGN block Simulink

Dear Sommer, Documentation of the AWGN Simulink block can be found <http://www.mathworks.com/help/comm/ref/awgnchannel.html h...

6 years ago | 0

| accepted

Saving figures with transparent patches / objects - figure background turning black

Dear Sir/Madame, Please try the following example. It makes an 3D plot, makes it transparant and saves it as a png. clc...

6 years ago | 0

Comparing .mdl and .slx

Dear Mr. Busfield, As you may already know SLX is a compressed package that conforms to the Open Packaging Conventions (OPC) ...

6 years ago | 1

| accepted

sliceomatic for 3D plots

Dear Arora, Slicomatic is a GUI tool in the <http://www.mathworks.com/matlabcentral/fileexchange/764-sliceomatic file exchang...

6 years ago | 0

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Real time plot of vibration data

Dear Marius, You could use a pause function together with toc for the next value. A example is shown below: clc;clear; ...

6 years ago | 0

How can i change the "name" of my picture when using the imread('name') function?

Dear Ely, To import an image in MATLAB, you have to specify the extension. (i.e. Name.jpg) In the code below you find a me...

7 years ago | 0

| accepted