readmatrix behaviour is unpredictable

I've started using readmatrix as it is recommended instead of csvread and dlmread - I actually like that it pads with nans, but at the minute that's all I like.

In the past couple of weeks since I started using it, twice have I got weird unpredictable behaviour.

I fixed the first problem (it was skipping the first n lines for random files) by setting DelimitedTextImportOptions.

Now it is reading data into cell arrays instead of regular arrays. I've no idea why it should do that, I wrote to file using writematrix...

Anyway, how can I force readmatrix to read into an array of doubles?

Answer 1

[Urmila Rajpurohith]

you can try :

M = readmatrix(filename,'OutputType','double')

Refer to the below documentation for more information on namevalue pair arguments of "readmatrix" function.

https://www.mathworks.com/help/matlab/ref/readmatrix.html#namevaluepairs