Error in using reshape

the error stated: Number of elements must not change. Use [] as one of the size inputs to automatically calculate the appropriate size for that dimension.

i'm doing a reshape in producing a taylor diagram. im using the same script but now it's not working because of this reshape issue.

i used reshape as follows;

for observation data;

dimN = length(size(getOBS));

xbox = size(getOBS, dimN-1);

ybox = size(getOBS, dimN );

data = ones(length(exp)+1,xbox*ybox);

data(1,:) = reshape(squeeze(getOBS),1,xbox*ybox);

for experiment;

data(expcount+1,:) = reshape(squeeze(getDAT),1,xbox*ybox);

previously i did the same for a different set of experiments, and did not have any issues. do you know how i can fix this?

the script is attahced

[Sharifah Omar]

i have 28 experiments ,against 1 obervation

[Image Analyst]

What does this show in the command window:

temp = squeeze(getDAT);
size(temp)
numel(temp)
xbox*ybox
fprintf('Number of columns in data = %d.\n', size(data, 2));

[cr]

Perhaps you now have singleton dimensions while you didn't earlier?

[Sharifah Omar]

@Image Analyst unrecognized function of getDAT

it also says the same error of reshape

[Voss]

@Sharifah Omar: getDAT is cleared at the end of the big for loop in your script (line 144), along with data and getOBS:

clear data getOBS getDAT

so you won't be able to get any info about them after that.

Try commenting-out that line, run the script again, and then tell us what running these commands gives you:

size(getOBS)
expcount
size(getDAT)

[Sharifah Omar]

@Voss it still shows the same error; reshape

[Voss]

Please tell us the size of getOBS, the value of expcount, and the size of getDAT.

[Image Analyst]

When I run your script, I get this:

>> Copy_of_DJF_region1

Unrecognized function or variable 'nc_varget'.

Error in Copy_of_DJF_region1 (line 33)

getOBS = nc_varget('ERA5_DJF_north.nc',var{varcount});

Please attach that nc_varget() function and the file called 'ERA5_DJF_north.nc'

Answer 1

[KSSV]

The error is simple....you are trying to reshape more number of elements than present in the matrix.

EXample:

A = rand(9,1) ;
B = reshape(A,3,3) ; % as nine lements present in A, you can have 3,3 combination. Nothing lese combination possilbe
C = reshape(A,2,4) ; % error. You cannot have eight elements from nine. If you want to have 
D = reshape(A(1:8),2,4) ; % here eight elements are picked and reshaped into eight elements 

Note: If A has m*n elements. You can reshape A into m1,n1 so that m1*n1 = m*n.