[mapserver-users] Fwd: Strange behavior on different zoom levels
Axel Bayerl
axel.bayerl at r2software.net
Tue Jan 31 08:00:49 PST 2017
Hello,
I'm trying to diplay a raster on openlayers using wms. The problem
arises on one of the rasters which on different zoom levels displays
some tiles and the ones being displayed, doesn't correspond to the
ones next to them.
For example on zoom level 15 this image is produced:
https://i.imgur.com/OSaHxqc.png
And on zoom level 16:
https://i.imgur.com/omliU8v.png
Mapfile:
MAP
EXTENT -64.3842958639 -34.2139046531 -64.3584069558
-34.1902071213
SIZE 470 532
PROJECTION
"init=epsg:4326"
END
CONFIG "MS_ERRORFILE" "/tmp/ms_error.txt"
DEBUG 5
CONFIG "CPL_DEBUG" "ON"
CONFIG "PROJ_DEBUG" "ON"
WEB
METADATA
"ows_name" "ec02s_medio-promedio_1"
"wms_title" "ec02s_medio-promedio_1"
"wms_onlineresource"
"<host>?MAP=<mapfilepath>/ec02s_medio-average-relativeyield_1.map&"
"wms_srs" "EPSG:4269 EPSG:4326
EPSG:3857 EPSG:32720 EPSG:900913"
"wms_enable_request" "*"
"ows_enable_request" "*"
"wms_include_items" "all"
"ows_include_items" "all"
# "wms_feature_info_mime_type" "text/plain"
"wms_feature_info_mime_type" "text/html"
# "wms_feature_info_mime_type" "application/json"
END
END
LAYER
NAME "main"
DATA "ec02s_medio-average-relativeyield"
TYPE RASTER
STATUS ON
PROCESSING "BANDS=1"
PROCESSING "APPROXIMATION_SCALE=FULL"
OFFSITE 0 0 0
HEADER "../../mapfiles/templates/head.html"
TEMPLATE "../../mapfiles/templates/main.html"
FOOTER "../../mapfiles/templates/foot.html"
INCLUDE
'<mapfilepath>/ec02s_medio-average-relativeyield_1_ramp.map'
PROJECTION
AUTO
END
END
END
Rampfile:
CLASS
EXPRESSION ([pixel] > 4.78697947983e-05 AND [pixel] <=
2.19701147079)
STYLE
COLOR 255 0 255
END
END
gdalinfo on the raster:
Driver: ENVI/ENVI .hdr Labelled
Files: <rasterpath>/ec02s_medio-average-relativeyield
<rasterpath>/ec02s_medio-average-relativeyield.aux.xml
<rasterpath>/ec02s_medio-average-relativeyield.hdr
Size is 470, 532
Coordinate System is:
PROJCS["UTM Zone 20, Southern Hemisphere",
GEOGCS["WGS 84",
DATUM["WGS_1984",
SPHEROID["WGS 84",6378137,298.257223563,
AUTHORITY["EPSG","7030"]],
TOWGS84[0,0,0,0,0,0,0],
AUTHORITY["EPSG","6326"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9108"]],
AUTHORITY["EPSG","4326"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",-63],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",10000000],
UNIT["Meter",1]]
Origin = (372480.000000000000000,6215920.000000000000000)
Pixel Size = (5.000000000000000,-5.000000000000000)
Metadata:
Band_1=Band Math (b1/0.973546)
Image Structure Metadata:
INTERLEAVE=BAND
Corner Coordinates:
Upper Left ( 372480.000, 6215920.000) ( 64d23' 2.05"W, 34d11'23.72"S)
Lower Left ( 372480.000, 6213260.000) ( 64d23' 3.47"W, 34d12'50.06"S)
Upper Right ( 374830.000, 6215920.000) ( 64d21'30.27"W, 34d11'24.75"S)
Lower Right ( 374830.000, 6213260.000) ( 64d21'31.65"W, 34d12'51.08"S)
Center ( 373655.000, 6214590.000) ( 64d22'16.86"W, 34d12' 7.40"S)
Band 1 Block=470x1 Type=Float32, ColorInterp=Undefined
Description = Band Math (b1/0.973546)
Min=0.000 Max=2.197
Minimum=0.000, Maximum=2.197, Mean=1.000, StdDev=0.336
NoData Value=0
Metadata:
STATISTICS_MAXIMUM=2.1970114707947
STATISTICS_MEAN=0.99999959390852
STATISTICS_MINIMUM=4.7869794798316e-05
STATISTICS_STDDEV=0.3356240935974
If i comment the INCLUDE of the rampfile, the image is rendered pitch
black, but the whole image is displayed correctly.
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