Re: [mapserver-users] Map Not Available at This Scale Image
Folks, Now solved. It was actually quite easy for my set up using the advice provided by you all over the last few days and some further searching. I've created a layer that's first to be rendered and is always on with the label being drawn immediately (LABELCACHE OFF). The label is always overwritten by other layers where data is available. When no data is available, the label shows. Layer code below: # -- LAYER NAME NoCoverage STATUS DEFAULT TYPE ANNOTATION LABELCACHE OFF TRANSFORM CC UNITS PIXELS FEATURE POINTS 0 0 END TEXT Sorry|No map coverage|available here END CLASS LABEL FONT arial TYPE TRUETYPE SIZE 8 COLOR 0 0 0 FORCE TRUE ALIGN CENTER WRAP | END # LABEL END # CLASS END # LAYER # -- Many thanks. Regards, Donald -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: 14 June 2012 23:16 To: Donald Kerr; 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Why not a layer with STATUS DEFAULT but a MAXSCALE value that kicks in when your other data runs out? From: Donald Kerr [mailto:donald.k...@dkerr.co.uk] Sent: Thursday, June 14, 2012 4:07 PM To: Lime, Steve D (DNR); 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Steve, I don't think that any of those options will work for me. I have fifteen zoom levels and the map coverage is complete except for three. Those three are a made up of an image returned after querying PostGIS so a blank image is effectively created since there are no points, lines or polygons returned from the PostGIS query at that zoom level i.e. to all intents and purposes, a valid map is returned except that there's noting in it. It's these particular zoom levels where I am trying to display the no coverage' message. I had thought that it may be possible to create a permanent layer that's always there under all the layers and is effectively overwritten by any drawn layers above except where there's no data. I'm thinking now that this may not be possible. Many thanks. Regards, Donald -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: 14 June 2012 21:54 To: Donald Kerr; 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Couple of options. 1) You can create a layer that displays that text in the middle of the map and have it turn on below a certain scale. If doing tiling w/meta-tiling you'd want draw the text the same number of times as you have meta-tiles. That would take some mucking about but it's doable. 2) There's a little used parameter in the WEB section called MINTEMPATE/MAXTEMPLATE. MapServer will redirect to the URL specified depending on scale. It's been ages since I used it but in theory you could reference an image with the necessary text by URL. Steve From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Donald Kerr Sent: Thursday, June 14, 2012 1:42 PM To: 'MAPSERVER USERS' Subject: [mapserver-users] Map Not Available at This Scale Image Hi list, I have a number of layers that are on or off depending on the zoom level and some of those layers do not have coverage in certain areas. The question is, is there a way to display a map image saying something along the lines of, Map not available at this level? I think I have read somewhere that it can be done in a round about way but I cannot find any information after having a good internet trawl. Many thanks. Regards, Donald ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
[mapserver-users] Map Not Available at This Scale Image
Hi list, I have a number of layers that are on or off depending on the zoom level and some of those layers do not have coverage in certain areas. The question is, is there a way to display a map image saying something along the lines of, Map not available at this level? I think I have read somewhere that it can be done in a round about way but I cannot find any information after having a good internet trawl. Many thanks. Regards, Donald ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Map Not Available at This Scale Image
Steve, I don't think that any of those options will work for me. I have fifteen zoom levels and the map coverage is complete except for three. Those three are a made up of an image returned after querying PostGIS so a blank image is effectively created since there are no points, lines or polygons returned from the PostGIS query at that zoom level i.e. to all intents and purposes, a valid map is returned except that there's noting in it. It's these particular zoom levels where I am trying to display the no coverage' message. I had thought that it may be possible to create a permanent layer that's always there under all the layers and is effectively overwritten by any drawn layers above except where there's no data. I'm thinking now that this may not be possible. Many thanks. Regards, Donald -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: 14 June 2012 21:54 To: Donald Kerr; 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Couple of options. 1) You can create a layer that displays that text in the middle of the map and have it turn on below a certain scale. If doing tiling w/meta-tiling you'd want draw the text the same number of times as you have meta-tiles. That would take some mucking about but it's doable. 2) There's a little used parameter in the WEB section called MINTEMPATE/MAXTEMPLATE. MapServer will redirect to the URL specified depending on scale. It's been ages since I used it but in theory you could reference an image with the necessary text by URL. Steve From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Donald Kerr Sent: Thursday, June 14, 2012 1:42 PM To: 'MAPSERVER USERS' Subject: [mapserver-users] Map Not Available at This Scale Image Hi list, I have a number of layers that are on or off depending on the zoom level and some of those layers do not have coverage in certain areas. The question is, is there a way to display a map image saying something along the lines of, Map not available at this level? I think I have read somewhere that it can be done in a round about way but I cannot find any information after having a good internet trawl. Many thanks. Regards, Donald ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Map Not Available at This Scale Image
Why not a layer with STATUS DEFAULT but a MAXSCALE value that kicks in when your other data runs out? From: Donald Kerr [mailto:donald.k...@dkerr.co.uk] Sent: Thursday, June 14, 2012 4:07 PM To: Lime, Steve D (DNR); 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Steve, I don't think that any of those options will work for me. I have fifteen zoom levels and the map coverage is complete except for three. Those three are a made up of an image returned after querying PostGIS so a blank image is effectively created since there are no points, lines or polygons returned from the PostGIS query at that zoom level i.e. to all intents and purposes, a valid map is returned except that there's noting in it. It's these particular zoom levels where I am trying to display the no coverage' message. I had thought that it may be possible to create a permanent layer that's always there under all the layers and is effectively overwritten by any drawn layers above except where there's no data. I'm thinking now that this may not be possible. Many thanks. Regards, Donald -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: 14 June 2012 21:54 To: Donald Kerr; 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Couple of options. 1) You can create a layer that displays that text in the middle of the map and have it turn on below a certain scale. If doing tiling w/meta-tiling you'd want draw the text the same number of times as you have meta-tiles. That would take some mucking about but it's doable. 2) There's a little used parameter in the WEB section called MINTEMPATE/MAXTEMPLATE. MapServer will redirect to the URL specified depending on scale. It's been ages since I used it but in theory you could reference an image with the necessary text by URL. Steve From: mapserver-users-boun...@lists.osgeo.orgmailto:mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Donald Kerr Sent: Thursday, June 14, 2012 1:42 PM To: 'MAPSERVER USERS' Subject: [mapserver-users] Map Not Available at This Scale Image Hi list, I have a number of layers that are on or off depending on the zoom level and some of those layers do not have coverage in certain areas. The question is, is there a way to display a map image saying something along the lines of, Map not available at this level? I think I have read somewhere that it can be done in a round about way but I cannot find any information after having a good internet trawl. Many thanks. Regards, Donald ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
Re: [mapserver-users] Map Not Available at This Scale Image
Steve, MAXSCALEDENOM? (MAXSCALE deprecated?) - Will look into the options in the morning ... time for ... it's 23:23! Cheers. Donald -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: 14 June 2012 23:16 To: Donald Kerr; 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Why not a layer with STATUS DEFAULT but a MAXSCALE value that kicks in when your other data runs out? From: Donald Kerr [mailto:donald.k...@dkerr.co.uk] Sent: Thursday, June 14, 2012 4:07 PM To: Lime, Steve D (DNR); 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Steve, I don't think that any of those options will work for me. I have fifteen zoom levels and the map coverage is complete except for three. Those three are a made up of an image returned after querying PostGIS so a blank image is effectively created since there are no points, lines or polygons returned from the PostGIS query at that zoom level i.e. to all intents and purposes, a valid map is returned except that there's noting in it. It's these particular zoom levels where I am trying to display the no coverage' message. I had thought that it may be possible to create a permanent layer that's always there under all the layers and is effectively overwritten by any drawn layers above except where there's no data. I'm thinking now that this may not be possible. Many thanks. Regards, Donald -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: 14 June 2012 21:54 To: Donald Kerr; 'MAPSERVER USERS' Subject: RE: [mapserver-users] Map Not Available at This Scale Image Couple of options. 1) You can create a layer that displays that text in the middle of the map and have it turn on below a certain scale. If doing tiling w/meta-tiling you'd want draw the text the same number of times as you have meta-tiles. That would take some mucking about but it's doable. 2) There's a little used parameter in the WEB section called MINTEMPATE/MAXTEMPLATE. MapServer will redirect to the URL specified depending on scale. It's been ages since I used it but in theory you could reference an image with the necessary text by URL. Steve From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Donald Kerr Sent: Thursday, June 14, 2012 1:42 PM To: 'MAPSERVER USERS' Subject: [mapserver-users] Map Not Available at This Scale Image Hi list, I have a number of layers that are on or off depending on the zoom level and some of those layers do not have coverage in certain areas. The question is, is there a way to display a map image saying something along the lines of, Map not available at this level? I think I have read somewhere that it can be done in a round about way but I cannot find any information after having a good internet trawl. Many thanks. Regards, Donald ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
