"Error using cell2struct Number of field names must match number of fields in new structure. Error in matrix_from_rasters (line 9) hdr = cell2struc​t(num2cell​(hdr{2}),h​dr{1});"

Hi everybody! I'm trying to crate a column matrix from an ascii file having several rows and columns.

str = fileread('crosscurv_7x7_MAC.asc');
str = strrep(str,',','.');
% Parse Header:
opt = {'MultipleDelimsAsOne',true};
hdr = textscan(str,'%s%f',6,opt{:});
hdr = cell2struct(num2cell(hdr{2}),hdr{1});
% Parse Matrix:
opt = {'HeaderLines',numel(fieldnames(hdr)), 'CollectOutput',true};
fmt = repmat('%f32',1,hdr.ncols);
Crosscurv = textscan(str,fmt,opt{:});
Crosscurv = Crosscurv{1};
Crosscurv(Crosscurv==hdr.NODATA_value) = NaN;

Something is going wrong. I get this error:

"Error using cell2struct 
Number of field names must match number of fields in new structure.
 Error in matrix_from_rasters (line 9) hdr = cell2struct(num2cell(hdr{2}),hdr{1});"

Does anybody help me please?

Thanks in advance

Answer 1

[Jan]

Use the debugger to examine, whats going on. Either set a breakpoint in the failing line, or stop Matlab automatically if an error occurs:

dbstop if error

Then run the code again and check, what the variables are:

% Failing line:
% hdr = cell2struct(num2cell(hdr{2}),hdr{1});
hdr{1}
hdr{2}
tmp = num2cell(hdr{1})
size(tmp)
size(hdr{1})

Then "Number of field names must match number of fields in new structure" shoudl be clear.