Timeline for Copied the red band of the RGB TIFF file with GDAL in C++
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Sep 30, 2022 at 4:48 | comment | added | Michael Stimson | I tested your code exactly as written (different raster paths though) with the flush to close and it worked for me. The 16/8 bit data type was not a problem. I'm using 64 bit GDAL 1.11.1, released 2014/09/24 with Visual Studio 2012, version 11.0.61219.00 update 5 which is a bit newer than your version of studio, perhaps you might need to grab a much older dev version of GDAL from the archives of GISInternals gisinternals.com/archive.php. | |
| Sep 30, 2022 at 2:25 | comment | added | Michael Stimson | The only thing I can see different is I allocate my memory using _aligned_malloc learn.microsoft.com/en-us/cpp/c-runtime-library/reference/… to ensure multibyte types align with the word boundary. As your input raster is of type GDT_Byte perhaps it would be a good time to change the data types to match the input. In the meantime I'll test your code on an 8 bit 3 band raster I have locally. | |
| Sep 29, 2022 at 8:39 | comment | added | Blue | Thank you so much. Unfortunately, the way didn't work. All the value of the new image is still 128. Do you have other idea of that situation? | |
| Sep 29, 2022 at 5:24 | history | edited | Michael Stimson | CC BY-SA 4.0 |
Add flush and Destroy
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| Sep 29, 2022 at 5:20 | comment | added | Michael Stimson | Perhaps there's still a reference remaining, try flush the writes and GDALDestroyDriverManager(); on the very last line, I'll edit that into the code to show where I put them. | |
| Sep 29, 2022 at 4:44 | comment | added | Blue | Thank for your answer. It's quite clear. I read the document and I just notice that I shouldn't use 'delete pOldDS;'. I changed my close statements to: GDALClose((GDALDatasetH)pOldDS); GDALClose((GDALDatasetH)pNewDS); However, all the value of the new image is still 128. | |
| Sep 28, 2022 at 7:35 | history | answered | Michael Stimson | CC BY-SA 4.0 |