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Konrad


Universität Freiburg

Last seen: 5 days ago |  Active since 2017

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Answered
I need to calculate the distance matrix between these locations in ev charging stations placement
Hi, let's say you have 10 2d coordinates of charging stations pos = rand(10,2); Then one efficient way of computing the dista...

12 months ago | 1

Answered
Interpolating the indexes of values in a Vector
Hi, use interp1(): a = [2 4 6 8 10 12 14 16]; b = [6, 5, 4.5, 14.3]; interp1(a,1:numel(a),b,'linear') % 'linear' is also the...

1 year ago | 0

Answered
How to save and load all the states of checkboxes and etc
Hi Ron, here is something I recently used in an App Designer GUI: The App needs a property 'config' and the following method...

2 years ago | 0

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Answered
How to populate a new vector by extracting only certain elements from another vector?
Hi Loren, if understood your question correctly, this should do what you want: load('reticolo2D.mat'); [Xpix, Ypix] = meshgri...

2 years ago | 0

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Answered
How to filter an entire dataset of ecg signals
Hi basically, you already described what to do: use load to import the data use designfilt to get filter parameters --- EDIT:...

2 years ago | 0

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Answered
View and Commit Changes dialog is blank
Hi I had the same problem with 2020b (win10) when using 2 displays with the main matlab windows moved to the secondary displa...

2 years ago | 0

Answered
reading multiple text file from two different folders using nested for loop
Hi Salma It depends on what exactly you want to do with the data in the text files, but reading the file line by line seems to ...

2 years ago | 0

Answered
Getting camera viewing data in real time
Hi, you can link the Camera-properties of the axes: figure; ah(1) = axes; figure; ah(2) = axes; plot3(ah(1),rand(10,1),rand(...

2 years ago | 1

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Answered
Randomly generate a vector containing integers. Extract items from odd positions using a single command line
Hi Dacian, indexing an expression (e.g. randi(100,10,1)(1:2:9)) is not possible in Matlab. Here is a workaround using groupsum...

2 years ago | 0

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Answered
How to open .hdr files (paired with zipped .img files)
Hi David, hdrread is not for radiological images but for high dynamic range images. You are dealing with the nifti file format...

3 years ago | 0

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Answered
find the average pixel value of matrix of images
Hi Michael, allImages{i} = ... creates a cell-array containing the images. If your images are all grayscale and of the same si...

3 years ago | 0

Answered
How to call python Script in specified environment in Matlab?
Hi, please see this answer by Walter. I think pyenv() affects only python calls using the py.-prefix. But calling python via s...

3 years ago | 1

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Answered
How to recenter spatial data?
hi, maybe I didn't get it, but why not just add 180? lonW = lon + 180;

3 years ago | 0

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Answered
Precision of numbers problem (I think)
Hi Phillip, yes, it has to do with precision. ismember(phys_diffs,new_data(:,2)) % ans = % 1×7 logical array % 1 0 ...

3 years ago | 0

Answered
Mean and median at each interval
Hi data = readtable('Data.xlsx'); % read data data = data(~ismember(data.Volume,[0 1]),:); % exclude rows where volume=0 or vo...

3 years ago | 0

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Answered
Auto update row index to match the variable length
Hi you can use b(1:numel(a),k) = a if k is scalar. Best, K

3 years ago | 0

Answered
Wie kann ich einen unbekannten String in einem Array finden? | finding an unknown string in an string array
Hi Patrick wenn ich richtig verstehe möchtest Du alle strings im array finden die mit * anfangen?! Das kannst Du so machen: st...

3 years ago | 0

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Answered
String to number from array
Hi Nicle you need str2double() (or str2num()), not double(). double() gives you the UTF(?) code corresponding to the input st...

3 years ago | 1

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Answered
Why am I getting wrong outputs with this MATLAB code?
Hi, i've rewritten the code without all the hard-coded indices, which I couldn't make sense of and which made your code very ha...

3 years ago | 0

Answered
enter a string of characters and numbers, add and return the sum of the numbers in matlab, for example: 'there are two blue birds and 4 red birds on the branch'--> return 6
Hi if you only need to handle numeric type, I'd recommend regular expressions: strng = ' 2 blue birds and 4 red birds'; res_s...

3 years ago | 0

Answered
Get values of the particular line from surf plot
Hi Ramesh, the contour3() function returns the contour matrix (see help) containing x- and y-coordinates of the contour. You ca...

3 years ago | 1

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Answered
Calculate mean of matrix for specific interval
Hi Pelle, you need to index your variable DEM correctly: DEM_mean2 = mean(DEM(11:110,:)); Best, Konrad

3 years ago | 1

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Answered
Animation video from data points, giving error below
Hi Muhammad, it seems that the video you are trying to create is too large to fit into memory. You can either run the code on ...

3 years ago | 1

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Answered
could someone please tell me why my code returns complex answers while it is about room temperature ?
Hi, One quick guess: in your equation (eqn(number_of_nodes) = ...) you are raising to the power of .24, which means you are ta...

3 years ago | 0

Answered
Help reorganizing data in a table
Hi Andrew, I think unstack() is what you're looking for: T=readtable('example_sheet.xlsx'); uT = unstack(T,{'Duration' 'Ratin...

3 years ago | 0

Answered
Is it possible to extract 2 separated sections from the same table?
Hi Ruth, you can create indices into rawdata for your subjects and pilots programmatically like this: filename='RES_IAS (1).xl...

3 years ago | 0

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Answered
3D bar graph of Z with data in X Y Z array
Hi, provided that x and y are always positive integers, this may be a good start: tab = readtable('XYZ_Data.txt'); zarray = z...

3 years ago | 1

Answered
How do I plot points coming from a for loop without using vectors?
Hi, values on the x-axis are not equally spaced because on every interation you increase L by i, which itself is increased by 1...

3 years ago | 0

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Answered
How to stackplot a table?
Hi Oliver, does this code produce the plot you need? load('example.mat', 'table') figure; nvar = size(table,2)-3; t = [tabl...

3 years ago | 0

Answered
How to read files from sub folders in sorted order?
Hi, one solution would be to convert the time suffix to numeric and sort the numbers: d = dir('Time*'); n = {d.name}; ...

6 years ago | 0