Circle moving in a velocity field Matlab
Is there anyway to code a blob moving in from a smaller pipe to a larger pipe in matlab, when the velocity fields at a particular point is known. It doesn't have to be an animation. Just figures at different time step. So, the final figure would look something like this. Thanks
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(MATLAB) How to alter Z axis (incorporate twist) into a stacked 2D voxel plot
I am creating a 3D vertical axis turbine using voxels, I have created a 2D surface or my design and then stacked it several times to create the VAWT. Is there a way to alter each level as it gets placed to create a spiral effect.
I am currently using the repmat function to "extrude" my 2D plane, is there a different function which will input a helix like pitch angle ?
% Extruding the base vertically
Printing html links/anchors in Matlab command window to files with spaces in path
When I run the following line in Matlab
sprintf('<a href="matlab:system(''start %s'');">%s</a>', url, text)
I get a clickable link in the Matlab command window. Which I use to allow the user to easily open: .png, .pdf or .html files on Windows
The problem start when the url contains whitespaces? Yes some of the users of the software likes to use spaces in paths...
What I Have Tried
None of the examples in the following script is working...
url = 'C:\Temp\path with space\test.htm'; text = 'test.htm' disp(sprintf('<a href="matlab:system(''start %s'');">%s</a>', url, text)); disp(sprintf('<a href="matlab:system(''start "%s"'');">%s</a>', url, text)); disp(sprintf('<a href="matlab:system(''start "%s"'');">%s</a>', url, text)); disp(sprintf('<a href="matlab:system([''start '' char(34) ''%s'' char(34)]);">%s</a>', url, text));
I need to optimize some parameters and the relation between them in matlab
I have parameter Z with definite value and four other parameters including "A,B,C,D" that Z is related to these parameters.How can I find an optimized combination of four parameters which are mentioned above to obtain the nearest value to the Z and the relation between these 5 parameters? I would be so thankful if anybody could help me.
What is correct syntax for limits of x-axis and y-axis when using fplot?
disp('Solution Domain Range Input') prompt='lims='; lims=input(prompt); disp(' ')
OUTPUT Solution Domain Range Input
lims=[-3 3 ] works fine, x axis range is from -3 to 3
lims=[-3 3 -3 3 ] gives error message
odes = diff(Y)== A*Y + B [xSol(t), ySol(t)] = dsolve(odes); xSolvpa = vpa(xSol) ySolvpa = vpa(ySol) fplot(xSolvpa, lims) hold on fplot(ySolvpa,lims)
Error using fplot (line 145) Invalid parameter '-3 3 -...'.
How to do? MM
Is it possible to change the 'colormap' scale in matlab?
I have a matrix with numbers would like to display an image with a different color for the numbers of the matrix. My problem is the following: I have 2 matrix. Matrix A contains values between 0 and 1 and matrix B contains values between 0 and 90. When I use the 'colormap' function with :
The image displayed has several levels of gray, when I am supposed to have several colours (because I am using jet). When I use the 'colormap' function with :
The image displayed is just completely white, probably because my values are higher than 64 (which is the max of jet).
How can I solve these two problems ? I rode a lot of tutos in several forums but I can't find the answer...
Thank you very much for answering my problem!
How to display contours of 2D data onto a (x,y,z) 3D plane of choice?
I am plotting the contours of a
Matlab. By default, the contours are laid on a (x,y) plane. Also by default, the (x,y) plane is located on the vertical level z = 0 in the
I am looking for a solution to display the 2D slice onto a (y,z) plane with a x value of my choice. That is to say I am trying to display the 2D horizontal slice as a 'vertical curtain' of which position on the x axis I choose.
I tried creating a
2D gridand add to it a third grid at a chosen x level:
[y,z] = meshgrid(coord1,coord2); % the 2D grid xlevel = 2; x = xlevel.*ones(size(y)); % the third grid
I was able to successfully use this grid to display the data using:
This produces the result I need, but it is a
surfplot, not a
contourffunction produces the following error message when given the same arguments:
Error using contourf (line 61)
Contour level values must be a vector or a scalar.
because the third argument (
z) is treated as the data to display and the fourth argument (
data) is treated as the value of the contours/isolines to display (that's where the error message is created).
For a reason I do not understand, the following does not produce an error message (but nothing is displayed either):
Any ideas to use
contourfto achieve the same result as what I get with