Opened 16 years ago
Closed 16 years ago
#2505 closed defect (fixed)
nodata value not reported from .aux file
| Reported by: | warmerdam | Owned by: | warmerdam |
|---|---|---|---|
| Priority: | normal | Milestone: | 1.5.3 |
| Component: | GDAL_Raster | Version: | 1.5.0 |
| Severity: | normal | Keywords: | GTiff pam aux |
| Cc: | gaopeng |
Description
The attached tif+aux does not report a nodata even though this node exists in the .aux file:
Eimg_NonInitializedValue(Eimg_NonInitializedValue) @ 2908 + 21 @ 3036
+ BASEDATA(valueBD): 1x1 of u8
+ valueBD = + 0
Attachments (1)
Change History (6)
by , 16 years ago
| Attachment: | nodata.zip added |
|---|
comment:1 by , 16 years ago
| Keywords: | GTiff added; HFA removed |
|---|---|
| Status: | new → assigned |
I have established that gdalinfo on the .aux file directly does report the nodata, so the problem would appear to be in the geotiff driver.
comment:2 by , 16 years ago
I have discovered two significant issues at play.
First, the GTIFF driver was not falling back to GDALPamRasterBand::GetNoDataValue() if there was no native geotiff nodata.
Second, the GDALPamRasterBand was not harvesting nodata values from .aux files in TryLoadAux().
Both issues were corrected in trunk (r15033).
I will construct a test case, and then backport into 1.5 branch.
comment:3 by , 16 years ago
I have applied the change in 1.5 branch as well (r15069) though I still need to prepare a test case for this issue.
comment:4 by , 16 years ago
| Milestone: | → 1.5.3 |
|---|---|
| Version: | svn-trunk → 1.5.0 |
comment:5 by , 16 years ago
| Keywords: | pam aux added |
|---|---|
| Resolution: | → fixed |
| Status: | assigned → closed |
Added pam_6 test in autotest/gcore/pam.py for this case in trunk (r15070).
zip of tiff+aux demonstrating issue.