append array of 1xn in mat file and as a result it should be look like kxn. k=3

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N/A 2018-10-25

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评论： N/A 2018-10-25

I want to append array of 1xn which is having values of each iteration into mat file. eg if iteration=3 and data=1xn then i want that after iterations i will get mat file containing values like 3 rows and n columns. this mat file is inside a loop. I dont want to overwrite the values. in present code it is overwriting it.

thank you.

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Stephen23 2018-10-25

编辑：Stephen23 2018-10-25

Note that save's -append option is very badly named: it should really be named -overwrite or something similar, because it does not "append" data to an existing variable in the .mat file, it actually completely overwrites any existing variable of the same name.

N/A 2018-10-25

yes I know :)

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Stephen23 2018-10-25

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编辑：Stephen23 2018-10-25

You will have to do one of these:

on each iteration load the data, concatenate, then save the data.
use matfile.
collect all of the data into one array, then save it all at once after the loop.

I recommend the third option (because it is the neatest and most efficient). Use matfile for very large data sets.

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N/A 2018-10-25

And there is also another problem. gprofits is coming from another .m file. And inside for loop gprofits appending values but if I change the size of gprofits to 1xn and if profits is of size 1xk where k<n then due to column numbers are not same it gives an error. Help me to resolve these problems. Thank you

N/A 2018-10-25