Converting cylindircal data into regular cartesian grid

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BHARAT SINGH 2023-6-21

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https://ww2.mathworks.cn/matlabcentral/answers/1986274-converting-cylindircal-data-into-regular-cartesian-grid

评论： Richard Burnside 2023-6-21

I have 4 csv files as follows

FieldMap_Bz.csv is a 301x501 data file containing Bz magnetic field values

FieldMap_Br.csv is a 301x501 data file containing Br magnetic field values

FieldMap_z.csv is a 1x501 file containing Z cordinates

FieldMap_r.csv is a 1x301 file containing R cordinates

there is no variation in theta so it can be assumed zero.

I want to get a output in the form of (X,Y,Z,BX,BY,BZ) in a tabular form.Below is my code. However I am not able to figure out a way to make the meshgrid same size for both directions

clc;

clear all;

close all;

Br=importdata('FieldMap_Bz.csv');%%Radial Magnetic field values

Bz=importdata('FieldMap_Br.csv');%%Axial Magnetic field values

Z=importdata('FieldMap_z.csv');

Radial=importdata('FieldMap_r.csv');

R=Radial(:,1);%%Radial Cordinates

Z=Z(1,:);%%Axial Cordinates

theta=0;

X=Radial*cos(theta);

Y=Radial*sin(theta);

Z=Z;

Bx=Br*cos(theta);

By=Br*sin(theta);

Bz=Bz;

I look forward to everyones suggestion and help.

thanks

Bharat

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Answer 1

Richard Burnside 2023-6-21

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https://ww2.mathworks.cn/matlabcentral/answers/1986274-converting-cylindircal-data-into-regular-cartesian-grid#answer_1260024

编辑：Richard Burnside 2023-6-21

Bharat,

Have you looked at the pol2cart function? I think it should work for you here.

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BHARAT SINGH 2023-6-21

yes I did. But how should I reshape the arrays because they are not same size.

Richard Burnside 2023-6-21

FieldMap_Bz.csv is a 301x501 data file containing Bz magnetic field values

FieldMap_Br.csv is a 301x501 data file containing Br magnetic field values

FieldMap_z.csv is a 1x501 file containing Z cordinates

FieldMap_r.csv is a 1x301 file containing R cordinates

and theta is assumed to be zero.

Hmm...

Its hard to say how to stitch this data together without seeing it. Its a planar slice of a cylinder so possibly it is 301 r coordinates and 501 z coordinates with orthogonal B-field vectors at each (r,z) coordinate pair.

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