Yann Chemin wrote:
Hello,

I need to load about 400 files with the C API to work on each pixel
temporal dimension.

I would like to make a look to load them but fail so far...

GDALDatasetH hDataset[MAXFILES];
GDALAllRegister();
GDALDriverH hDriver[MAXFILES];
GDALRasterBandH hBand[MAXFILES];
float *pafScanline[MAXFILES];
int nXSize1,nYSize1;

//loading input files
for(i=0;i<n_imgs;i++){
    in[i] = argv[i+1];
    hDataset[i] = GDALOpen(in[i];GA_ReadOnly);
    hDriver[i] = GDALDatasetDriver(hDataset[i]);
    hBand[i] = GDALGetRasterBand(hDataset[i],1);
    nXSize1 = GDALGetRasterBandXSize(hBand[0]);
    pafScanline[i] = (float *) CPLMalloc(sizeof(float)*nXSize1);
}

it mentions error 10: 'hDataset' is NULL in 'GDALGetDatasetDriver'

Yann,

Is that the first error reported?  Does it occur for i==0 or much later
(perhaps around the 250th file)? Many operating systems have a limit
on the number of files that can be open at once, in some cases around
256.

Best regards,
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