Is This Concatenation Error a Bug?
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I have a block of code that processes two vectors t and x that are Nx1 double data types (t and x come from a .mat file and are always equal dimensions and data types). In the routine, I'm trying to concatenate these vectors to create an Nx2 array. I had this block of code working for months in a script, and now that I'm moving it into a function, I'm getting the "dimensions of these arrays are not consistent" error when I try to concatenate!
function [] = YAHBOI(araw,b)
indb = find(b);
yah = araw(indb);
Nyah = length(yah);
boi = {};
for i = 1 : Nyah
boii = yah{i};
file = [boii,'.mat'];
load(file);
boi_rawi = [t, x];
boi = [boi, boi_rawi];
end
end
Error using horzcat
Dimensions of arrays being concatenated are not consistent.
Error in YAHBOI (line 14)
boi_rawi = [t, x];
I'm not new to MATLAB... I know that this should work in theory. In fact, I tried a few workarounds when stepping through the function:
- When I got to the line of interest, I copied and pasted it into the console to see if it would throw an error. It worked, so that's kind of interesting but still expected.
- I tried 1) a second time, but this time I made a quick change to the code:
...
load(file);
y = x;
boi_rawi = [t, y];
...
This change didn't work either.
This seems like a bug to me. Is it? Or am I making some fundamental misunderstanding of how the enviroment works?
Thanks for any assistance!
3 comentarios
Respuestas (1)
Steven Lord
el 1 de Oct. de 2020
(t and x come from a .mat file and are always equal dimensions and data types).
Trust but verify. Set an error breakpoint and run your code. When MATLAB stops on that line, verify that what you trust is true actually is.
2 comentarios
Walter Roberson
el 12 de Oct. de 2020
(Me, picturing Steven saying "Trust by verify!" in a fake Russian accent...)
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