[mapserver-users] CGI Tilemode blank on one layer

Sun Dec 27 13:11:57 PST 2015

Thanks to much help from Steve i was finally able to solve my problem and
it was a naming error on the layer that wasn’t displaying. I was writing
the name as 'kenyaoutline' on the url section while it should have been
'Kenyaoutline' as named on the mapfile.

On Thu, Dec 24, 2015 at 4:30 PM, Lime, Steve D (MNIT) <
Steve.Lime at state.mn.us> wrote:

> Since you have no scale dependencies or anything like that I don’t know
> why… You have some spurious layer definitions (no need for TILEITEM or
> UNITS) but I don’t think that’s the problem. The most obvious cause would
> be that you’re viewing an area where there is ocean but no Kenya. What
> happens if you request both layers in the same tile?
>
>
> http://localhost/cgi-bin/mapserv?MAP=/var/wpsinput/gdss.map&layer=10m_ocean&layer=kenyaoutline&mode=tile&tile=${x}+${y}+${z}.png
> <http://localhost/cgi-bin/mapserv?MAP=/var/wpsinput/gdss.map&layer=10m_ocean&layer=kenyaoutline&mode=tile&tile=$%7bx%7d+$%7by%7d+$%7bz%7d.png>
>
> Steve
>
>
>
> *From:* Daniel Mwaurah [mailto:mwaurah at gmail.com]
> *Sent:* Wednesday, December 23, 2015 4:30 PM
>
> *To:* Lime, Steve D (MNIT) <Steve.Lime at state.mn.us>
> *Cc:* mapserver-users at lists.osgeo.org
> *Subject:* Re: [mapserver-users] CGI Tilemode blank on one layer
>
>
>
> Thats true Steve,
>
>
>
> Its actually rendering in the non tiled setting. I wonder how come its one
> layer not rendering in tilemode while the other one is. Both render ok in
> non tile setting.
>
>
>
>
>
>
>
> On Wed, Dec 23, 2015 at 10:29 PM, Lime, Steve D (MNIT) <
> Steve.Lime at state.mn.us> wrote:
>
> It will look at the extent of shapefiles to decide if it needs to process
> features in a layer but that’s to be expected. I mean, if there’s nothing
> to draw then why bother. Have you verified that the layers render in a
> non-tiled setting?
>
>
>
> *From:* Daniel Mwaurah [mailto:mwaurah at gmail.com]
> *Sent:* Wednesday, December 23, 2015 3:26 PM
> *To:* Lime, Steve D (MNIT) <Steve.Lime at state.mn.us>
> *Cc:* mapserver-users at lists.osgeo.org
> *Subject:* Re: [mapserver-users] CGI Tilemode blank on one layer
>
>
>
> Thank you Steve for your response.
>
>
>
> I have tried commenting out the extents but still the same problem. I
> think it recognizes the inbuilt extents of the data layers.
>
>
>
> On Wed, Dec 23, 2015 at 9:36 PM, Lime, Steve D (MNIT) <
> Steve.Lime at state.mn.us> wrote:
>
> What happens if you comment out the layer extents? They really shouldn’t
> be necessary.
>
>
>
> *From:* mapserver-users [mailto:mapserver-users-bounces at lists.osgeo.org] *On
> Behalf Of *Daniel Mwaurah
> *Sent:* Wednesday, December 23, 2015 2:27 PM
> *To:* mapserver-users at lists.osgeo.org
> *Subject:* [mapserver-users] CGI Tilemode blank on one layer
>
>
>
> hallo people,
>
>
>
> I would greatly appreciate some help with Mapserver Tile mode. Eeven a
> hint in the right direction would be much appreciated. I am trying to
> display two layers in Tile mode in open layers as follows
>
>
>
>
>
> 1.
> http://localhost/cgi-bin/mapserv?MAP=/var/wpsinput/gdss.map&layer=kenyaoutline&mode=tile&tile=${x}+${y}+${z}.png
> <http://localhost/cgi-bin/mapserv?MAP=/var/wpsinput/gdss.map&layer=kenyaoutline&mode=tile&tile=$%7bx%7d+$%7by%7d+$%7bz%7d.png>
>
>
>
> 2.
> http://localhost/cgi-bin/mapserv?MAP=/var/wpsinput/gdss.map&layer=10m_ocean&mode=tile&tile=${x}+${y}+${z}.png
> <http://localhost/cgi-bin/mapserv?MAP=/var/wpsinput/gdss.map&layer=10m_ocean&mode=tile&tile=$%7bx%7d+$%7by%7d+$%7bz%7d.png>
>
>
>
>
>
> The problem arises in that one layer the 10m_ocean displays while the
> other one just shows a blank. I suspect it has to do with the extents
> because the 10m_ocean layers has a large extent from -180 to 180 while the
> kenyaoutline layer only covers one country from about 33 to 37 degrees.
>
>
>
> Is there a limitation to small extents in tile mode? or what could be the
> problem. My mapfile is as below.
>
>
>
>
>
> MAP
>
>   #FONTSET "[fontsetpath]"
>
> DEBUG 5
>
>   CONFIG "MS_ERRORFILE" "/var/www/wpsinput/ms_error.txt"
>
>   EXTENT 33 -5 42 6
>
>   IMAGETYPE "png"
>
>   NAME "Natural_Earth_quick_start_for_QGIS"
>
>   SIZE 600 600
>
>   CONFIG ON_MISSING_DATA "LOG"
>
>   STATUS ON
>
>   UNITS DD
>
>
>
>   OUTPUTFORMAT
>
>     NAME "png"
>
>     MIMETYPE "image/png"
>
>     DRIVER "AGG/PNG"
>
>     EXTENSION "png"
>
>     IMAGEMODE RGBA
>
>     TRANSPARENT TRUE
>
>   END # OUTPUTFORMAT
>
>
>
>   PROJECTION
>
>     "proj=longlat"
>
>     "datum=WGS84"
>
>     "no_defs"
>
>   END # PROJECTION
>
>   LEGEND
>
>     KEYSIZE 20 10
>
>     KEYSPACING 5 5
>
>     LABEL
>
>       SIZE MEDIUM
>
>       OFFSET 0 0
>
>       SHADOWSIZE 1 1
>
>       TYPE BITMAP
>
>     END # LABEL
>
>     STATUS OFF
>
>   END # LEGEND
>
>
>
>   QUERYMAP
>
>     SIZE -1 -1
>
>     STATUS OFF
>
>     STYLE HILITE
>
>   END # QUERYMAP
>
>
>
>   SCALEBAR
>
>     INTERVALS 4
>
>     LABEL
>
>       SIZE MEDIUM
>
>       OFFSET 0 0
>
>       SHADOWSIZE 1 1
>
>       TYPE BITMAP
>
>     END # LABEL
>
>     SIZE 200 3
>
>     STATUS OFF
>
>     UNITS MILES
>
>   END # SCALEBAR
>
>
>
>   WEB
>
>     FOOTER ""
>
>     HEADER ""
>
>     TEMPPATH ""
>
>     METADATA
>
>       "ows_onlineresource"        "
> http://localhost/cgi-bin/mapserv?map=/home/wpsinput/worldmap.map"
>
>       "ows_enable_request"       "*"
>
>       "ows_srs"  "EPSG:4326"
>
>       "ows_title" "Natural_Earth_quick_start_for_QGIS"
>
>     END # METADATA
>
>     #TEMPLATE "[templatepath]"
>
>   END # WEB
>
>
>
>   LAYER
>
>     DATA "/var/www/10m_physical/10m_ocean.shp"
>
>     EXTENT 33 -5 42 6
>
>     METADATA
>
>       "ows_title" "10m_ocean"
>
>     END # METADATA
>
>     NAME "10m_ocean"
>
>     PROJECTION
>
>       "proj=longlat"
>
>       "datum=WGS84"
>
>       "no_defs"
>
>     END # PROJECTION
>
>     STATUS ON
>
>     TILEITEM "location"
>
>     TYPE POLYGON
>
>     UNITS METERS
>
>     CLASS
>
>       NAME "Single symbol"
>
>       STYLE
>
>         COLOR 198 226 242
>
>       END # STYLE
>
>     END # CLASS
>
>   END # LAYER
>
>
>
>
>
> LAYER
>
>     DATA "/var/www/kenyaoutline/Kenyaoutline.shp"
>
>     EXTENT 33 -5 42 6
>
>     METADATA
>
>       "ows_title" "Kenyaoutline"
>
>     END # METADATA
>
>     NAME "Kenyaoutline"
>
>     PROJECTION
>
>       "proj=longlat"
>
>       "datum=WGS84"
>
>       "no_defs"
>
>     END # PROJECTION
>
>     STATUS ON
>
>     TILEITEM "location"
>
>     TYPE POLYGON
>
>     UNITS METERS
>
>     CLASS
>
>       NAME "Single symbol"
>
>       STYLE
>
>         COLOR 0 0 0
>
>       END # STYLE
>
>     END # CLASS
>
>   END # LAYER
>
>
>
> END # MAP
>
>
>
>
>
>
>
> The same happens when i try to view it using QGIS Tilelayer plugin.
>
>
>
>
> --
>
> Kind regards,
>
> Mwaura Daniel
>
>
>
>
>
> --
>
> Kind regards,
>
> Mwaura Daniel
>
>
>
>
>
> --
>
> Kind regards,
>
> Mwaura Daniel
>

-- 
Kind regards,

Mwaura Daniel
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