function write_linux

[meltingCat]

Error in using function write_linux. Can't write data back to a binary file.

% using N-MNIST
filename = '00004.bin';
TD = Read_Ndataset(filename); 

Show3D(TD);

filename = '11111.bin';
write_linux(TD, filename);
TD = Read_Ndataset(filename);

Show3D(TD);

[gorchard]

The names of the different formats are a bit confusing, but here's an explanation:
The datasets use a format optimized for the dataset resolution to reduce file sizes. You can read a dataset file using the "Read_Ndataset()" function as you have done.
You can write the "linux" format using "write_linux()", but this is not the same as the dataset format. To read the "linux" format you need to use the "read_linux()" function.

[meltingCat]

Thanks for reply. I read a dataset file using the Read_Ndataset() function and done some modification. I would like to convert back to dataset format same as N-MNIST .bin files.

[gorchard]

For this you'd need to make your own function which reverses the format of "Read_Ndataset.m". I haven't had access to matlab in years, so I cannot test it, but it would look something like this:

function write_Ndataset(TD, filename)

evtStream = uint8(length(TD.x)*5);

evtStream(1:5:end) = TD.x-1;
evtStream(2:5:end) = TD.y-1;
evtStream(3:5:end) = bitshift(TD.p-1,7) + bitand(bitshift(TD.ts,-16), 127);
evtStream(4:5:end) = bitand(bitshift(TD.ts, -8), 255);
evtStream(5:5:end) = bitand(TD.ts, 255);

evtFile = fopen(filename, 'w');
fwrite(evtFile,evtStream,'uint8');
fclose(evtFile);

return