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The purpose of this contest is to create the smallest possible file that is | |
recognized as a valid raster GeoPackage by GDAL. | |
The following rules must be followed: | |
- the file must be readable with "gdalinfo -checksum contest.gpkg" (exactly this commandline) | |
where contest.gpkg is the candidate file. | |
- the above command must report that the driver used to open the file is the GeoPackage driver. | |
- the above command must report, without any displayed warning or error, at least one raster | |
band and the checksum of the band(s) | |
- any GDAL version with GeoPackage raster support can be used (i.e. GDAL 2.0 or later) at the |
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$ gdalinfo -json byte.tif | |
{ | |
"description":"byte.tif", | |
"driverShortName":"GTiff", | |
"driverLongName":"GeoTIFF", | |
"files":[ | |
"byte.tif", | |
"byte.tif.ovr", | |
"byte.tif.aux.xml" | |
], |
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Credits to http://www.sqlite.org/lang_with.html#mandelbrot | |
$ LD_LIBRARY_PATH=/home/even/install-sqlite-3.8.5/lib:$LD_LIBRARY_PATH ogrinfo :memory: -sql "WITH RECURSIVE xaxis(x) AS (VALUES(-2.0) UNION ALL SELECT x+0.05 FROM xaxis WHERE x<1.2),yaxis(y) AS (VALUES(-1.0) UNION ALL SELECT y+0.1 FROM yaxis WHERE y<1.0),m(iter, cx, cy, x, y) AS (SELECT 0, x, y, 0.0, 0.0 FROM xaxis, yaxis UNION ALL SELECT iter+1, cx, cy, x*x-y*y + cx, 2.0*x*y + cy FROM m WHERE (x*x + y*y) < 4.0 AND iter<28 ), m2(iter, cx, cy) AS (SELECT max(iter), cx, cy FROM m GROUP BY cx, cy), a(t) AS (SELECT group_concat( substr(' .+*#', 1+min(iter/7,4), 1), '') FROM m2 GROUP BY cy) SELECT x'0a' || group_concat(rtrim(t),x'0a') as mandelbrot FROM a" -dialect sqlite | |
INFO: Open of `:memory:' | |
using driver `SQLite' successful. | |
Layer name: SELECT | |
Geometry: None | |
Feature Count: 1 |
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Submitted as pull request: | |
@27367 [27367] 26 minutes rouault MIFFILE: Remove duplicate OLCSequentialWrite test and report … | |
@26120 [26120] 11 months rouault MITAB: support reading MIF file with no associated MID file (when MIF file … | |
@25343 [25343] 17 months rouault MITAB: avoid negative zeros in TOWGS84 read from TAB file (#4931) | |
@25033 [25033] 20 months rcoup #481 - add datum mapping between EPSG/authority codes and the MapInfo? … | |
@24647 [24647] 23 months rouault Fix double free in OGRTABDataSource::Create() when exiting with error … | |
@24368 [24368] 2 years rouault MITAB: missing break when dealing with Mollweide projection (#4628) | |
Non submitted --> buggy http://trac.osgeo.org/gdal/ticket/3853 : | |
@24135 [24135] 2 years chaitanya #3853. Fix the unwanted changes in data types while converting a … |