MATLAB: How to save the result of stlwrite to a specific directory chosen by the user

saving directorystlstlwrite

I am using the stlwrite to create an stl file out of a triangulted input, say for example I use f3 and v3 which are faces and verticies to create a triangulation and then convert that into stl. The stl saves in the same directory as code. I would like to have the option to ask the user of my code to chose a certain directory to save the file. how do I do that ?

TR = triangulation(f3,v3);
stlwrite(TR,'G.stl');

I am not sure I understand how uiputfile works.

Best Answer

TR = ...
[F,P] = uiputfile('*.stl');
stlwrite(TR,fullfile(P,F))

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MATLAB: Subarray Simulation have different output by using similar method

Conceptually the two approach is equivalent. The discrepancy you see is related to how you generate the custom antenna in your second approach. When you use the result from pattern, you essentially get only the magnitude data. However, even though the elements are isotropic, the response of an array has phase information in there. Therefore, instead of using

[embpattern, az, el] = pattern(subarray,fc);
ant_sub = phased.CustomAntennaElement('FrequencyVector',[10e9,50e9],...
    'AzimuthAngles',az,...
    'ElevationAngles',el,...
    'MagnitudePattern',embpattern,...
    'PhasePattern',zeros(size(embpattern)));

I would use the following code to generate the custom antenna element

az = -180:180;
el = -90:90;
embpattern = complex(zeros(numel(el),numel(az)));
subarrayresp = phased.ArrayResponse('SensorArray',subarray);
for m = 1:numel(el)
    embpattern(m,:) = subarrayresp(fc,[az;el(m)*ones(size(az))]);
end
ant_sub = phased.CustomAntennaElement('FrequencyVector',[10e9,50e9],...
    'AzimuthAngles',az,...
    'ElevationAngles',el,...
    'MagnitudePattern',mag2db(abs(embpattern)),...
    'PhasePattern',angle(embpattern));

If you use this ant_sub in your program, you will see that the two approach give the same power level.

HTH

MATLAB: Get Directivity Values From phased.URA

If you want directivity values for all angles, you can just simply do

D = pattern(sar_array, F(1), 'PropagationSpeed', PS, 'Type','directivity', ...
    'CoordinateSystem', fmt);

If you want directivity in only several points, say 0 and 30 degrees azimuth, then you can save some computation by doing

D = directivity(sar_array, F(1), [0 30])

HTH

Best Answer

Related Solutions

MATLAB: Subarray Simulation have different output by using similar method

MATLAB: Get Directivity Values From phased.URA

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