Created
October 27, 2022 01:48
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Creating a GTiff with embedded ISO metadata
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| import numpy | |
| from osgeo import gdal | |
| from osgeo import osr | |
| # Taken from Examples section of https://wiki.gcube-system.org/gcube/ISO_19115:2003/19139 | |
| METADATA = """\ | |
| <fileIdentifier> | |
| <gco:CharacterString>33462e78-e5ab-11c3-737d-b3a61366d028</gco:CharacterString> | |
| </fileIdentifier> | |
| <language> | |
| <gco:CharacterString>eng</gco:CharacterString> | |
| </language> | |
| <hierarchyLevel> | |
| <MD_ScopeCode codeList="http://metadata.dgiwg.org/codelistRegistry?MD_ScopeCode" codeListValue="dataset"/> | |
| </hierarchyLevel> | |
| <contact> | |
| <CI_ResponsibleParty> | |
| <individualName> | |
| <gco:CharacterString>Mario Rossi</gco:CharacterString> | |
| </individualName> | |
| <organisationName> | |
| <gco:CharacterString>ISTI-CNR</gco:CharacterString> | |
| </organisationName> | |
| <contactInfo> | |
| <CI_Contact> | |
| <address> | |
| <CI_Address> | |
| <electronicMailAddress> | |
| <gco:CharacterString>rossi@isti.cnr.it</gco:CharacterString> | |
| </electronicMailAddress> | |
| </CI_Address> | |
| </address> | |
| </CI_Contact> | |
| </contactInfo> | |
| <role> | |
| <CI_RoleCode codeList="http://www.isotc211.org/2005/resources/codeList.xml#CI_RoleCode" codeListValue="pointOfContact">pointOfContact</CI_RoleCode> | |
| </role> | |
| </CI_ResponsibleParty> | |
| </contact> | |
| <dateStamp> | |
| <gco:Date>2013-03-09</gco:Date> | |
| </dateStamp> | |
| <metadataStandardName> | |
| <gco:CharacterString>ISO19119</gco:CharacterString> | |
| </metadataStandardName> | |
| <metadataStandardVersion> | |
| <gco:CharacterString>2005/PDAM 1</gco:CharacterString> | |
| </metadataStandardVersion>""" | |
| origin = (444720, 3751320) | |
| pixel_size = (30, -30) | |
| epsg = 3116 | |
| srs = osr.SpatialReference() | |
| srs.ImportFromEPSG(epsg) | |
| projection_wkt = srs.ExportToWkt() | |
| target_path = 'raster.tif' | |
| base_array = numpy.ones((4, 4)) | |
| raster_driver = gdal.GetDriverByName('GTiff') | |
| ny, nx = base_array.shape | |
| new_raster = raster_driver.Create( | |
| target_path, nx, ny, 1, gdal.GDT_Float32) | |
| if projection_wkt is not None: | |
| new_raster.SetProjection(projection_wkt) | |
| new_raster.SetGeoTransform( | |
| [origin[0], pixel_size[0], 0.0, origin[1], 0.0, pixel_size[1]]) | |
| # NOTE: this GEO_METADATA could really be whatever metadata tag we want. | |
| # For example, "FOO_GEO_METADATA" would be written as expected, just undera nonstandard tag. | |
| new_raster.SetMetadataItem('GEO_METADATA', METADATA) | |
| new_band = new_raster.GetRasterBand(1) | |
| new_band.SetNoDataValue(-1) | |
| new_band.WriteArray(base_array) | |
| new_band = None | |
| pew_raster = None |
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