I'm trying to use the precipitation accumulations from our national weather agency: https://data.knmi.nl/datasets/radar_tar_corr_accum_03h/2.0 The data is in HDF5 with two subsets. I only need one subset and I need the data in WGS84.
I'm using GDAL v2.2 from GisInternals.com I tried using GDALWarp but then I get an error about missing the transformation matrix. Using Google I figured out I need to do GDALTranslate first to set the georeferenced bounds. This is the result of GDALInfo: Driver: HDF5/Hierarchical Data Format Release 5 Files: RAD_NL25_RAC_03H_201612041200.h5 Size is 512, 512 Coordinate System is `' Metadata: geographic_geo_column_offset=0 geographic_geo_dim_pixel=KM,KM geographic_geo_number_columns=700 geographic_geo_number_rows=765 geographic_geo_par_pixel=X,Y geographic_geo_pixel_def=LU geographic_geo_pixel_size_x=1.0000013 geographic_geo_pixel_size_y=-1.0000055 geographic_geo_product_corners=0 49.362053 0 55.973602 10.856429 55.388977 9.0092793 48.895298 geographic_geo_row_offset=3649.9792 geographic_map_projection_projection_indication=Y geographic_map_projection_projection_name=STEREOGRAPHIC geographic_map_projection_projection_proj4_params=+proj=stere +lat_0=90 +lon_0=0 +lat_ts=60 +a=6378.14 +b=6356.75 +x_0=0 y_0=0 image1_calibration_calibration_flag=Y image1_calibration_calibration_formulas=GEO = 0.010000 * PV + 0.000000 image1_calibration_calibration_missing_data=0 image1_calibration_calibration_out_of_image=65535 image1_image_bytes_per_pixel=2 image1_image_data_CLASS=IMAGE image1_image_data_VERSION=1.2 image1_image_geo_parameter=PRECIP_[MM] image1_image_number_accumulated_products=37 image1_image_product_name=RAD_NL25_RAC_H1.5_03H image1_image_size=535500 image1_statistics_stat_max_value=9.96 image1_statistics_stat_min_value=0 image2_calibration_calibration_flag=Y image2_calibration_calibration_formulas=GEO=0.001*PV+-32.768 image2_calibration_calibration_missing_data=0 image2_calibration_calibration_out_of_image=65535 image2_image_bytes_per_pixel=2 image2_image_data_CLASS=IMAGE image2_image_data_VERSION=1.2 image2_image_geo_parameter=ADJUSTMENT_FACTOR_[DB] image2_image_number_accumulated_products=37 image2_image_product_name=RAD_NL25_RAC_H1.5_03H image2_image_size=535500 image2_statistics_stat_max_value=0 image2_statistics_stat_min_value=0 overview_hdftag_version_number=3.6 overview_number_image_groups=2 overview_number_radar_groups=1 overview_number_satellite_groups=0 overview_number_station_groups=0 overview_product_datetime_end=04-DEC-2016;12:00:00.000 overview_product_datetime_start=04-DEC-2016;09:00:00.000 overview_product_group_name=RAD_NL25_RAC_03H overview_products_missing=NA radar1_radar_adjustment=F=-0.00dB radar1_radar_location=5.17834 52.101681 radar1_radar_name=DeBilt Subdatasets: SUBDATASET_1_NAME=HDF5:"RAD_NL25_RAC_03H_201612041200.h5"://image1/image_data SUBDATASET_1_DESC=[765x700] //image1/image_data (16-bit unsigned integer) SUBDATASET_2_NAME=HDF5:"RAD_NL25_RAC_03H_201612041200.h5"://image2/image_data SUBDATASET_2_DESC=[765x700] //image2/image_data (16-bit unsigned integer) Corner Coordinates: Upper Left ( 0.0, 0.0) Lower Left ( 0.0, 512.0) Upper Right ( 512.0, 0.0) Lower Right ( 512.0, 512.0) Center ( 256.0, 256.0) This is my GDALTranslate command, the projectionstring and a_ullr come from the meta data: gdal_translate -of GTiff -a_nodata 65535 -a_srs "+proj=stere +lat_0=90 +lon_0=0 +lat_ts=60 +a=6378.14 +b=6356.75 +x_0=0 y_0=0" -a_ullr 0 55.973602 9.0092793 48.895298 "HDF5:\"RAD_NL25_RAC_03H_201612041200.h5\"://image1/image_data" "test-translate.tif" This is my GDALWarp command: gdalwarp -overwrite -s_srs "+proj=stere +lat_0=90 +lon_0=0 +lat_ts=60 +a=6378.14 +b=6356.75 +x_0=0 y_0=0" -t_srs EPSG:3857 -dstnodata 65535 -of GTiff "test-translate.tif" "test-warp.tif" The warped tif is not where I expect it to be. I expect a origin around 52 en 5 degrees (The Netherlands) I'm getting: Origin = (169.559973821725920,89.530840368222059) I've checked with the data provider and the projectionstring is correct. What am I doing wrong? Thanks, Paul
_______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
