trying to rearange a matrix with 2 vectors of indexes and one vector of values

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Kobi
Kobi 2014-9-15
编辑： Niko 2014-9-15
i have 2 vectors of rows and columns location in the destination matrix and one vector E where all the values are located, and i need to place the values of E in a matrix according to the vectors of the columns and rows
can't think of a solution maybe you can suggest something?
this is the exp file:
https://dl.dropboxusercontent.com/u/38094905/tm.exp
the columns or row vectors are rx_pos or tx_pos this is the code:
%%Read exp files and use them in matlab
% Modified: 17/09/2014
clear all
close all
clc
%slCharacterEncoding('ASCII')
fid=fopen('tm.exp');
exp_data=textscan(fid,'%f%f%f%f%f%*f%*f','Headerlines',10 ); % read only col 4 and 5 and skip the first 10 lines
% without loosing prescision!.
fclose(fid);
tx_pos=cell2mat(exp_data(1)); % position of tx antenna 1-36
rx_pos=cell2mat(exp_data(2)); % position of rx antenna
freq=cell2mat(exp_data(3)); % frequancy
reEtot=cell2mat(exp_data(4)); % real part of E_total
imEtot=cell2mat(exp_data(5)); % imaginary part of E_total
clear exp_data
% filter messurements by frequancy
frequancy=4; % [GHz]
loc_f=find(freq==frequancy);
tx_pos=tx_pos(loc_f);
rx_pos=rx_pos(loc_f);
freq=freq(loc_f);
reEtot=reEtot(loc_f);
imEtot=imEtot(loc_f);
Etot=reEtot+1i*imEtot;
%%build the matrix rx_pos x tx_pos
[RX,TX]=meshgrid(rx_pos,tx_pos);
H=Etot(TX,RX);
clc % the Encoding Warning is relevent only for the first 10 rows of the exp file

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采纳的回答

Niko
Niko 2014-9-15
编辑：Niko 2014-9-15
cf. sub2ind
LinInd=sub2ind(size(YourMatrix),RowInd,ColInd);
YourMatrix(LinInd)=E;

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