I am trying to use an open source Matlab figure exporter called fig2texPS but I can't seem to get it to work, the documentation says I have to get the figure number of the figure I want to export then call
fig2tex(myFigureNumber)
but I don't know how to get the so-called "figure number".Does anyone have some experience with this project or someone who can understand this documentation guide me on how to use it?
UPDATE: Tried plotting a function then getting the figure number from the figure window but it still does not work.Can you please clarify a bit more on how I would get the "figure handle"?
x = 1:1:10;
y = 1:1:10;
plot(x,y);
fig2tex(1); //Undefined function 'fig2tex' for input arguments of type 'double'.
It's the figure handle, which you can get when you make the figure (myFigureNumber = figure;), or with gcf if the figure is active/current, or with other functions. However, most of the time you will see it right here:
EDIT: For your updated error message, the error is because MATLAB can't find fig2tex (should be fig2texPS). Find the path to fig2texPS.m and add it to your path with addpath C:\path\to\fig2texfolder where that file lives. Verify that it works with which fig2texPS.
Related
i'm trying to use getpts to choose points in the current figure using the mouse. However, when i run it, i'm getting the error "unrecognized function or variable 'getpts'."
Here's my code
for i=1:n
im = imread([read_path 'IMG_' num2str(i+t) '.jpg']); %Get image
figure
imshow(im)
[x,y] = getpts; %returns error
end
Any idea why that's happening?
Note: I'm using the free trial version of Matlab
I'd appreciate the help!
From the docs, getpts is in the image processing toolbox.
This isn't always obvious, you can infer it from the docs link itself:
mathworks.com/help/images/ref/getpts.html
(where a built-in would be something like mathworks.com/help/matlab/ref/sum.html)
You can also see it's nested under the image processing toolbox in the side-bar on that page.
In your trial installation of MATLAB you likely don't have this toolbox. You might know from the install process, or you could check whether the toolbox folder exists in the installation directory, e.g.
I have the following function that I wish to solve using fzero:
f = lambda* exp(lambda^2)* erfc(lambda) - frac {C (T_m - T_i)}/{L_f*sqrt(pi)}
Here, C, T_m, T_i, and L_f are all input by the user.
On trying to solve using fzero, MATLAB gives the following error.
Undefined function or variable 'X'.
(where X are the variables stated above)
This error is understandable. But is there a way around it? How do I solve this?
This is answered to the best of my understanding after reading your question as it's not really clear what you are exactly trying and what you want exactly.
Posting the exact lines of code helps a big deal in understanding(as clean as possible, remove clutter). If then the output that matlab gives is added it becomes a whole lot easier to make sure we answer your question properly and it allows us to try it out. Usually it's a good idea to give some example values for data that is to be entered by the user anyway.
First of to make it a function it either needs a handle.
Or if you have it saved it as a matlab file you generally do not want other inputs in your m file then the variable.
So,
function [out]=yourfun(in)
constants=your values; %you can set a input or inputdlg to get a value from the user
out= something something, your lambda thingy probably; %this is the equation/function you're solving for
end
Now since that is not all that convenient I suggest the following
%declare or get your constants here, above the function makes it easier
syms lambda
f = lambda* exp(lambda^2)* erfc(lambda) - frac {C (T_m - T_i)}/{L_f*sqrt(pi)};
hf=matlabFunction(f); %this way matlab automatically converts it to a function handle, alternatively put #(lambda) in front
fzero(hf,x0)
Also this matlab page might help you as well ;)
I want to use fig2texPS to export plots from MATLAB to LaTeX. I copied the the script to D:\Eigene Dokumente\MATLAB\fig2TexPS and added this folder as a path in MATLAB. Unfortunately, I receive the following error:
>> fig2texPS()
Undefined function 'find' for input arguments of type 'matlab.graphics.chart.primitive.Line'.
Error in fig2texPS (line 526)
lsh = double(find(handle(lshandles),'-class','graph2d.lineseries')); % find plots
PS: I use a version of the script which was updated in order to work with pdtlatex (http://pastebin.com/xK6KxxBT) that I found in the MATLAB Central File Exchange. The same error also occurs when I use the original script.
This might not be the answer you are looking for, but there is the marvelous matlab2tikz that does the job of conversion of figures quite nicely, which you could use as an alternative to fig2texPS.
I also use the function fig2texPS.m and it works very well. It might be an answer for your question to use an older version of Matlab. I am using 2013b and it works. While I have tried this function with Matlab 2015a, I was getting the same error message.
I hope my answer helps you with your problems.
Im trying to perform centerline extraction for cardiac CT images, and I am stuck. I need an example code that uses the "fast marching method". I got this code from mathworks.
I1=im2double(imread('se036.png'));
SpeedImage=I1*1000+0.001;
SourcePoint=[800;803];
DistanceMap= msfm(SpeedImage, SourcePoint);
figure
imshow(DistanceMap,[0 3400]) StartPoint=[9;14];
ShortestLine=shortestpath(DistanceMap,StartPoint,SourcePoint);
hold on
plot(ShortestLine(:,2),ShortestLine(:,1),'r')
But I get error message Undefined function 'msfm' for input arguments of type 'double'.
It appears you are trying to use the Matlab File Exchange submission Accurate Fast Marching but you haven't properly installed the code. The function file you downloaded, msfm.m, needs to be in a folder on your path or in the current working directory.
Using the adftest function in MATLAB's econometrics toolbox, I'm receiving the following error:
>> [h1,pVal1] = adftest(y1,'model','ARD')
Error using lagmatrix (line 25)
lagmatrix: wrong # of input arguments
Error in adftest>runReg (line 705)
yLags = lagmatrix(y,0:(testLags+1));
Error in adftest (line 417)
testReg = runReg(i,y,testT,testLags,testModel,needRegOut);
y1 is a <41x1> vector of doubles.
Has anyone received this error or have any thoughts on what the issue is? I am using this code right out of the box so I'm not sure what is going on. I'd post to MATLAB's site, but it is down for maintenance.
This is either a bug in Matlab, in which case you should submit it on the Matlab support site. Before you do that, you should check that you don't have a function lagmatrix on your path that shadows the built-in function. Type
which lagmatrix
on the command line. If the path does not point to your Matlab installation, you should move lagmatrix off the Matlab search path.
Also note that y1 should not contain all NaN, or be otherwise degenerate, so you may want to check the function using the sample data as suggested in the help to be sure it's a bug and not just your data.
I had the same problem with this function. In my case, the problem was the function lagmatrix (older version) in my MATLAB path and the adftest function was the newest version. The soluction was delete the older version of lagmatrix.