# Henrik

### Kobenhavns Universitet

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Question

Remove error bar ends for R2014b?

Hi all Is there any way to remove the error bar ends in matlab R2014b? I used a function called removeErrorBarEnds for thi...

9 years ago | 1 answer | 2

### 1

answerQuestion

Horizontal errorbar in R2014B

Hi guys Is there any way to have both horizontal and vertical errorbars in R2014b? Thanks in advance!

9 years ago | 1 answer | 0

### 1

answererror using Matrix Dimensions

If you format your code it's easier to read for people here. The error message means that some of the matrices that you multi...

9 years ago | 0

| accepted

Contour/3d plots for large data sets

Try plot3 or scatter3 For a contour plot you need a nxn matrix

9 years ago | 0

Importing 30 .dat files in order

for k=1:30 data=load(['composite' num2str(k) '.dat]); data_matrix(:,k)=data; end

9 years ago | 0

| accepted

Change print format of all output figures using one command

So you have this command 50 places in the script? A quick fix would be to do a search and replace for print('-djpeg' --> prin...

9 years ago | 0

Can anyone explain me what this line do strcmp(D(i).name,'..')?

strcmp(D(i).name,'.' this compares the string in D(i).name to '.'. If the string is indeed '.', it returns TRUE (in MATLAB,...

9 years ago | 0

Generating a for loop and writing data

This could be a start. I don't know exactly what output stepwisefit gives, and which parts of it you want to save, but I've give...

9 years ago | 1

Polynomial with user defined coefficient?

I will suggest breaking the problem into smaller pieces that can be done individually, and then stitching them back together. ...

9 years ago | 0

| accepted

How can I plot a picture instead of "linespec" requirements?

If you want to plot a picture, then maybe surf or imagesc is the right command. EDIT: What is it exactly you want? Do you ...

9 years ago | 0

find n-st element that meet a logical expression

I can't think of a way to do your question 1 in one line of code, but is it really that important to remove one line of code? ...

9 years ago | 1

| accepted

Change input name when running a script

I'm not sure what you're asking, but does this help? names={'test1', 'test2'}; for k=1:length(names) autoname=names{k...

9 years ago | 0

| accepted

All possible combinations for fixed columns?

I don't know how fast this will be for large n, but this seems to do what you want. You can probably vectorize at least one of t...

9 years ago | 0

making counter for partial discharge due to high voltage in solids

I see several things that could be the issue. Try doing clear all Before you run your script. Then you'll notice tha...

9 years ago | 0

| accepted

How to count occurrences of a letter?

A quick and dirty solution could be F_count=0; switch x(i) case {'a','A'} grade = 'F'; ...

9 years ago | 1

Question

Importing data from text file

I need help reading a number of data files. An example of how the files look is the following: # some header text and numbe...

9 years ago | 1 answer | 0

### 1

answergenerate sinusoid from complex-amplitude representation

The commands real and imag are probably what you are searching for.

9 years ago | 0

fprintf from a switch/case?

This is not the most sophisticated solution, but it works.. switch major case 1 text_to_print='130'; cas...

9 years ago | 0

How to tell Solve function to only display real roots?

I don't know if this is what you want, but you could do something like real_soln=soln(imag(soln)==0); or if there are fl...

9 years ago | 1

| accepted

wheres the problem of this fiter code

Without any explanations of your code it's hard to tell, but my guess would be that ZZ = filter(HH,1,imp) should be ...

9 years ago | 0

Annoying behavior saving eps figures in MATLAB 2014

I don't know if this will solve the issue with the file size, but for me at least it solved the problem with white space outside...

9 years ago | 0

How to impliment this without loop?

You example is a bit confusing to me, there seems to be several unnecessary complications, e.g. using fields. Anyway, here's...

9 years ago | 0

Question

How do I make surf accurately reflect my data?

Consider this example: A=zeros(5); A(3,3)=1; surf(A) view(2) When viewing this, one would be tempted to think that th...

9 years ago | 1 answer | 0

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answerhelp me to reduce my function time runing

This should work: if true F=zeros(100,100); %always preallocate c = 1:100; V = 2 * (c-1); for r = 1:100 U = 1 ...

9 years ago | 1

How can I accomplish the following?

A1=' '; for i=1:1:10 if i<10 A2=[num2str(i),',']; else A2=num2str(i); end A1=[A1,A2]; end disp(A1) You can pr...

9 years ago | 0

| accepted

How can you avoid for loops by using vectorization?

I'm a bit tired, so here are just a few suggestions. You could calculate C once and for all outside the loops, this will save...

9 years ago | 0

How to hide 'ans= ' in sprintf output?

Terminate the line with a semicolon: sprintf('The array is %dx%d.',2,3);

9 years ago | 0

Question

Can you do this calculation any faster?

Hi there I am trying to optimize some code, an example is given below. In my code, v_ustar etc are calculated elsewhere, and ...

9 years ago | 1 answer | 1

### 1

answerQuestion

Find zero of function with least amount of iterations

Hi there I have a function that takes a very long time to calculate (can be several hours), and I need to find when it become...

9 years ago | 1 answer | 0

### 1

answerGPIB access to Keithley instruments

I managed to find a solution: the problem was that 64-bit MATLAB did not recognize the drivers. I installed 32-bit MATLAB and no...

9 years ago | 0

| accepted