Re: [mapserver-users] Circles around points in miles
Steve, Below is a map file with the settings we are using. The Extent and projection are commented out for the test. With the projection set to init=epsg:4326 the circles appear the size we expect. With projection set to proj=orth and the extent changed to EXTENT -20 -20 20 20 all the other data (removed form this map file for simplicity) appears ok and the circles disappear. Thanks Ian MAP NAME 'Simple' STATUS ON SIZE 1280 768 EXTENT -121 34 -115 41 # EXTENT -20 -20 20 20 UNITS DD SHAPEPATH shp IMAGECOLOR 120 120 120 SYMBOL NAME 'circle2' TYPE ELLIPSE POINTS 1 1 END FILLED FALSE END LAYER DEBUG 5 NAME range_circles TYPE point STATUS DEFAULT UNITS miles SIZEUNITS miles FEATURE POINTS -118 38 END END CLASS STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 50 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 100 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 150 COLOR 255 0 0 END END PROJECTION proj=latlong ellps=WGS84 datum=WGS84 END END PROJECTION init=epsg:4326 # proj=ortho lat_0=38.0 lon_0=-118 ellps=WGS84 END END -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: Monday, June 11, 2012 7:45 AM To: Ian Walberg; mapserver-users@lists.osgeo.org Subject: RE: [mapserver-users] RE: Circles around points in miles What are the UNITs set to with proj=ortho? -Original Message- From: Ian Walberg [mailto:ian.walb...@airborne.aero] Sent: Friday, June 08, 2012 7:19 PM To: mapserver-users@lists.osgeo.org Cc: Lime, Steve D (DNR) Subject: RE: [mapserver-users] RE: Circles around points in miles This question from earlier in the year has finally got to the top of our to do list. The issue is how to draw a circle at a given size (ideally in miles) when using proj=ortho. Everything works well when using proj=latlong and SIZEUNITS miles. Is this the expected behaviour and we do not understand something or is this a problem? Many thanks Ian -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Ian Walberg Sent: Thursday, February 16, 2012 1:57 PM To: mapserver-users@lists.osgeo.org Cc: Lime, Steve D (DNR) Subject: RE: [mapserver-users] RE: Circles around points in miles This does not work in all cases as we hoped, or we may not understand how to use the overall ma projection correctly. All the layers have the projection set to proj=latlong,ellps=WGS84. However if we set the overall map projection from this to proj=ortho the layer with the sizeunits set disappears. Is this an issue related to the projection or that the map units are now different. If we remove the sizeunits from the layer with the circles they reappear but of course are not the correct size (in miles). Many thanks Ian -Original Message- From: Ian Walberg Sent: Wednesday, February 15, 2012 11:40 AM To: Stephen Woodbridge; mapserver-users@lists.osgeo.org Subject: RE: [mapserver-users] RE: Circles around points in miles Stephen, That appears to do the trick. Many thanks Ian -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Stephen Woodbridge Sent: Wednesday, February 15, 2012 10:36 AM To: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] RE: Circles around points in miles On 2/15/2012 1:23 PM, Ian Walberg wrote: Steve, Thanks again for the info so far. Testing this today we realise (not surprisingly) that both the size and width of the symbol are now in miles. Ideally we would like to set the radius of the circle in miles and the width in pixels. Is there any way of doing this? Yes, add minwidth 1 and maxwidth 1 to force the width to 1 pixel. -Steve W Regards Ian -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: Monday, February 13, 2012 2:57 PM To: Ian Walberg; mapserver-users@lists.osgeo.org Subject: RE: Circles around points in miles I jumped the gun on the geomtransform idea. The support is there but because it operates at the style level buffer distances must be given in pixels and there's no easy way to convert a map distance (e.g. 10 miles) to pixels. I really should make some runtime constants (for example, extent, scale and cellsize) available to expressions- then you could do this. Glad you picked option 2 to start
Re: [mapserver-users] Circles around points in miles
Hello, Most likely the radius of your circles is to small for the extent you choose Arnd -Ursprüngliche Nachricht- Von: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] Im Auftrag von Ian Walberg Gesendet: Montag, 11. Juni 2012 18:37 An: Lime, Steve D (DNR); mapserver-users@lists.osgeo.org Betreff: Re: [mapserver-users] Circles around points in miles Steve, Below is a map file with the settings we are using. The Extent and projection are commented out for the test. With the projection set to init=epsg:4326 the circles appear the size we expect. With projection set to proj=orth and the extent changed to EXTENT -20 -20 20 20 all the other data (removed form this map file for simplicity) appears ok and the circles disappear. Thanks Ian MAP NAME 'Simple' STATUS ON SIZE 1280 768 EXTENT -121 34 -115 41 # EXTENT -20 -20 20 20 UNITS DD SHAPEPATH shp IMAGECOLOR 120 120 120 SYMBOL NAME 'circle2' TYPE ELLIPSE POINTS 1 1 END FILLED FALSE END LAYER DEBUG 5 NAME range_circles TYPE point STATUS DEFAULT UNITS miles SIZEUNITS miles FEATURE POINTS -118 38 END END CLASS STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 50 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 100 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 150 COLOR 255 0 0 END END PROJECTION proj=latlong ellps=WGS84 datum=WGS84 END END PROJECTION init=epsg:4326 # proj=ortho lat_0=38.0 lon_0=-118 ellps=WGS84 END END -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: Monday, June 11, 2012 7:45 AM To: Ian Walberg; mapserver-users@lists.osgeo.org Subject: RE: [mapserver-users] RE: Circles around points in miles What are the UNITs set to with proj=ortho? -Original Message- From: Ian Walberg [mailto:ian.walb...@airborne.aero] Sent: Friday, June 08, 2012 7:19 PM To: mapserver-users@lists.osgeo.org Cc: Lime, Steve D (DNR) Subject: RE: [mapserver-users] RE: Circles around points in miles This question from earlier in the year has finally got to the top of our to do list. The issue is how to draw a circle at a given size (ideally in miles) when using proj=ortho. Everything works well when using proj=latlong and SIZEUNITS miles. Is this the expected behaviour and we do not understand something or is this a problem? Many thanks Ian -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Ian Walberg Sent: Thursday, February 16, 2012 1:57 PM To: mapserver-users@lists.osgeo.org Cc: Lime, Steve D (DNR) Subject: RE: [mapserver-users] RE: Circles around points in miles This does not work in all cases as we hoped, or we may not understand how to use the overall ma projection correctly. All the layers have the projection set to proj=latlong,ellps=WGS84. However if we set the overall map projection from this to proj=ortho the layer with the sizeunits set disappears. Is this an issue related to the projection or that the map units are now different. If we remove the sizeunits from the layer with the circles they reappear but of course are not the correct size (in miles). Many thanks Ian -Original Message- From: Ian Walberg Sent: Wednesday, February 15, 2012 11:40 AM To: Stephen Woodbridge; mapserver-users@lists.osgeo.org Subject: RE: [mapserver-users] RE: Circles around points in miles Stephen, That appears to do the trick. Many thanks Ian -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Stephen Woodbridge Sent: Wednesday, February 15, 2012 10:36 AM To: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] RE: Circles around points in miles On 2/15/2012 1:23 PM, Ian Walberg wrote: Steve, Thanks again for the info so far. Testing this today we realise (not surprisingly) that both the size and width of the symbol are now in miles. Ideally we would like to set the radius of the circle in miles and the width in pixels. Is there any way of doing this? Yes, add minwidth 1 and maxwidth 1 to force the width to 1 pixel. -Steve W Regards Ian -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: Monday, February 13, 2012 2:57 PM To: Ian Walberg; mapserver-users@lists.osgeo.org Subject: RE: Circles around points in miles I jumped
Re: [mapserver-users] Circles around points in miles
Ok, so the MAP level units need to be set to the unit of the projection. That means in this case they need to be meters. Works now. Ian -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Ian Walberg Sent: Monday, June 11, 2012 8:02 PM To: Arnd Wippermann Cc: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] Circles around points in miles Arnd, Maybe. We had assumed that the UNITS for the layer would stay the same for different projections. Thanks Ian Below is a map file with the settings we are using. The Extent and projection are commented out for the test. With the projection set to init=epsg:4326 the circles appear the size we expect. With projection set to proj=orth and the extent changed to EXTENT -20 -20 20 20 all the other data (removed form this map file for simplicity) appears ok and the circles disappear. MAP NAME 'Simple' STATUS ON SIZE 1280 768 EXTENT -121 34 -115 41 # EXTENT -20 -20 20 20 UNITS DD SHAPEPATH shp IMAGECOLOR 120 120 120 SYMBOL NAME 'circle2' TYPE ELLIPSE POINTS 1 1 END FILLED FALSE END LAYER DEBUG 5 NAME range_circles TYPE point STATUS DEFAULT UNITS miles SIZEUNITS miles FEATURE POINTS -118 38 END END CLASS STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 50 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 100 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 150 COLOR 255 0 0 END END PROJECTION proj=latlong ellps=WGS84 datum=WGS84 END END PROJECTION init=epsg:4326 # proj=ortho lat_0=38.0 lon_0=-118 ellps=WGS84 END END -Original Message- From: Arnd Wippermann [mailto:arnd.wipperm...@web.de] Sent: Monday, June 11, 2012 1:36 PM To: Ian Walberg Cc: mapserver-users@lists.osgeo.org Subject: AW: [mapserver-users] Circles around points in miles Hello, Most likely the radius of your circles is to small for the extent you choose Arnd -Ursprüngliche Nachricht- Von: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] Im Auftrag von Ian Walberg Gesendet: Montag, 11. Juni 2012 18:37 An: Lime, Steve D (DNR); mapserver-users@lists.osgeo.org Betreff: Re: [mapserver-users] Circles around points in miles Steve, Below is a map file with the settings we are using. The Extent and projection are commented out for the test. With the projection set to init=epsg:4326 the circles appear the size we expect. With projection set to proj=orth and the extent changed to EXTENT -20 -20 20 20 all the other data (removed form this map file for simplicity) appears ok and the circles disappear. Thanks Ian MAP NAME 'Simple' STATUS ON SIZE 1280 768 EXTENT -121 34 -115 41 # EXTENT -20 -20 20 20 UNITS DD SHAPEPATH shp IMAGECOLOR 120 120 120 SYMBOL NAME 'circle2' TYPE ELLIPSE POINTS 1 1 END FILLED FALSE END LAYER DEBUG 5 NAME range_circles TYPE point STATUS DEFAULT UNITS miles SIZEUNITS miles FEATURE POINTS -118 38 END END CLASS STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 50 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 100 COLOR 255 0 0 END STYLE MAXWIDTH 1 SYMBOL 'circle2' SIZE 150 COLOR 255 0 0 END END PROJECTION proj=latlong ellps=WGS84 datum=WGS84 END END PROJECTION init=epsg:4326 # proj=ortho lat_0=38.0 lon_0=-118 ellps=WGS84 END END -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: Monday, June 11, 2012 7:45 AM To: Ian Walberg; mapserver-users@lists.osgeo.org Subject: RE: [mapserver-users] RE: Circles around points in miles What are the UNITs set to with proj=ortho? -Original Message- From: Ian Walberg [mailto:ian.walb...@airborne.aero] Sent: Friday, June 08, 2012 7:19 PM To: mapserver-users@lists.osgeo.org Cc: Lime, Steve D (DNR) Subject: RE: [mapserver-users] RE: Circles around points in miles
Re: [mapserver-users] Circles around points in miles
This question from earlier in the year has finally got to the top of our to do list. The issue is how to draw a circle at a given size (ideally in miles) when using proj=ortho. Everything works well when using proj=latlong and SIZEUNITS miles. Is this the expected behaviour and we do not understand something or is this a problem? Many thanks Ian -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Ian Walberg Sent: Thursday, February 16, 2012 1:57 PM To: mapserver-users@lists.osgeo.org Cc: Lime, Steve D (DNR) Subject: RE: [mapserver-users] RE: Circles around points in miles This does not work in all cases as we hoped, or we may not understand how to use the overall ma projection correctly. All the layers have the projection set to proj=latlong,ellps=WGS84. However if we set the overall map projection from this to proj=ortho the layer with the sizeunits set disappears. Is this an issue related to the projection or that the map units are now different. If we remove the sizeunits from the layer with the circles they reappear but of course are not the correct size (in miles). Many thanks Ian -Original Message- From: Ian Walberg Sent: Wednesday, February 15, 2012 11:40 AM To: Stephen Woodbridge; mapserver-users@lists.osgeo.org Subject: RE: [mapserver-users] RE: Circles around points in miles Stephen, That appears to do the trick. Many thanks Ian -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Stephen Woodbridge Sent: Wednesday, February 15, 2012 10:36 AM To: mapserver-users@lists.osgeo.org Subject: Re: [mapserver-users] RE: Circles around points in miles On 2/15/2012 1:23 PM, Ian Walberg wrote: Steve, Thanks again for the info so far. Testing this today we realise (not surprisingly) that both the size and width of the symbol are now in miles. Ideally we would like to set the radius of the circle in miles and the width in pixels. Is there any way of doing this? Yes, add minwidth 1 and maxwidth 1 to force the width to 1 pixel. -Steve W Regards Ian -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: Monday, February 13, 2012 2:57 PM To: Ian Walberg; mapserver-users@lists.osgeo.org Subject: RE: Circles around points in miles I jumped the gun on the geomtransform idea. The support is there but because it operates at the style level buffer distances must be given in pixels and there's no easy way to convert a map distance (e.g. 10 miles) to pixels. I really should make some runtime constants (for example, extent, scale and cellsize) available to expressions- then you could do this. Glad you picked option 2 to start. Steve -Original Message- From: Ian Walberg [mailto:ian.walb...@airborne.aero] Sent: Monday, February 13, 2012 4:38 PM To: Lime, Steve D (DNR); mapserver-users@lists.osgeo.org Subject: RE: Circles around points in miles Steve, Many thanks for the help and we have just tested option 2 and that works. We are using 6.x but are not exactly sure how to use the geomtransform to do this. Do you have an example? Regards Ian -Original Message- From: Lime, Steve D (DNR) [mailto:steve.l...@state.mn.us] Sent: Monday, February 13, 2012 9:37 AM To: Ian Walberg; mapserver-users@lists.osgeo.org Subject: RE: Circles around points in miles Couple of options depending on version: 1) 6.x: buffer the points using a style geomtransform 2) all versions: use layer SIZEUNITS to draw a circle symbol in miles I think option 1 is more flexible but option 2 is probably faster. Steve -Original Message- From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of Ian Walberg Sent: Saturday, February 11, 2012 10:06 PM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Circles around points in miles We need to draw circles of 50 and 100 miles around a list of points. How can we do this? Thanks Ian ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users ___ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
