#MAPSERVER IRC Log - 2009-11-10

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00:26:44 strk: do I need AGG to serve a raster layer with alpha ?
00:27:06 tbonfort_: no
00:27:42 strk: I downloaded the global population density grid from gpw
00:28:00 strk: in .grid format. and converted with gdal obtaining a geotiff with Band 1 Block=8640x1 Type=Float32, ColorInterp=Gray
00:28:26 strk: NoData Value=-3.4028234663852886e+38
00:28:58 strk: where do I specify in the mapfile which value to send as transparent ?
00:29:27 tbonfort_: offsite
00:29:41 tbonfort_: at the layer level
00:30:47 strk: uhm, r,g,b ?
00:31:33 strk: oh well, 0 0 0 did it
00:32:40 strk: alright, next. taking offsite 0,0,0 I still get colors from ~black to white
00:33:02 strk: now how can I turn that gradient into a 0 to max alpha ?
01:12:18 strk: tbonfort_: how to tell ms to send alpha when rendering vector layers ?
01:24:41 strk: found, from WMS request
01:24:45 strk: transparent=true
01:36:46 strk: now about input raster interpretation
01:36:57 strk: the inputRaster is single band with pixel value Float32
01:37:17 strk: rather than interpreting that as a Gray color, I'd like it to be an alpha value
01:37:23 strk: do I need to change the input raster ?
03:22:36 CIA-6: tbonfort * r9537 /branches/branch-5-4/docs/_static/ol.js: change map theme
03:25:10 CIA-6: tbonfort * r9538 /trunk/docs/_static/ol.js: use new map theme
04:13:37 AlanB: tbonfort_: hi
04:13:57 tbonfort_: Hi Alan
04:14:39 AlanB: How are you
04:15:13 tbonfort_: fine, and you ?
04:15:20 AlanB: fine too, thx.
04:15:26 tbonfort_: trying to reproduce that bug without success for the moment
04:15:32 AlanB: Did you figure out you seg fault problem?
04:15:36 AlanB: haa
04:16:01 AlanB: that's strange. I can't figure out what kind of line would produce that
04:16:53 tbonfort_: I'll let you know if I can get more info on this
04:17:15 AlanB: np, as soon as you get more info, I'm available to work on that.
05:57:24 mdev: FrankW?
06:21:39 leifer: anyone have success enabling fastcgi with the FGS installer?
06:23:10 AlanB: never tried with FGS... what's the problem?
06:39:35 mdev: Hi, does anyone know how to set what a label says in the mapfile? If I want to make a feature and then define a custom label for it?
06:40:54 leifer: AlanB: just looking for a build of mapserver with fastcgi enabled
06:41:32 mdev: nvmd, I got it... had to remove Labelitem declaration
06:43:44 AlanB: leifer: kk, maybe someone on the fgs list would have that
06:43:59 AlanB: or you can use fgs-dev.
06:44:19 leifer: AlanB: fgs-dev...is that the VM for building custom pkgs?
06:47:17 mdev: Is there a way to make symbols scale at the same proportion as the map when it is zoomed in/out?
06:49:28 jmckenna: mdev: i think you should experiment with the LAYER's SYMBOLSCALEDENOM parameter
06:49:42 mdev: is that parot of Symbol or Layer?
06:49:54 jmckenna: "LAYER's" means layer
06:49:58 jmckenna: : )
06:50:23 jmckenna: http://www.mapserver.org/mapfile/layer.html
06:50:25 sigabrt: Title: LAYER MapServer 5.4.2 documentation ( at www.mapserver.org )
06:50:43 mdev: ok found it
06:50:53 mdev: so the min/max has to be defined in the symbol?
06:51:56 jmckenna: i believe so...i don't have the test in front of me..but just experiment with it...sorry
06:52:15 mdev: ok,
06:52:59 mdev: ok, works but problem... it scales my label as well
06:53:15 mdev: because I have a symbol and a label for it
06:53:43 mdev: is it possible to make only the symbol scale and not the label? It's a layer wide definition so it is affecting everything
06:54:56 mdev: I guess I'll try defining a min and maxsize on the label then
06:55:41 mdev: ok that worked, so nvmd
06:55:46 mdev: thanks for your help
09:14:11 CIA-6: assefa * r9539 /trunk/msautotest/wxs/expected/ ( 4 files ): update tests for wfs11 related to axis order and attributes
11:01:35 mdev: hey, how do you define the thickness of a line?
11:02:12 FrankW: mdev: I believe line thickness is accomplish by stroking the line with a symbol and controlling the size of the symbol.
11:02:48 mdev: oh, you can't define a line as the TYPE and alter thickness in the layer properties?
11:03:26 mdev: so if you make a line as a symbol, what is then the layer type? is it still line? or polygon?
11:03:58 FrankW: It is style a line layer.
11:04:15 FrankW: But you need to define a symbol as part of the style parameters.
11:04:25 mdev: ah ok
11:04:49 mdev: I just tried the size parameter in style and that worked but the line looks fuzzy
11:04:58 mdev: does it work better doing it as a symbol?
11:05:19 FrankW: ah, then disregard my statements about needing symbols - it is apparently inaccurate.
11:05:36 FrankW: I think it was once that line thickness could only be accomplished with symbols.
11:06:14 mdev: ah ok... but for some reason the 2 lines that got drawn are inconsistent in size and they look jagged
11:06:19 mdev: they are diagnol
11:06:29 mdev: is it possible to do antialiasing on lines?
11:06:37 FrankW: You might want to investigate antialiasing options with the AGG renderer.
11:06:48 FrankW: not my area of expertise, but I know it has some capabilities.
11:06:51 mdev: but is antialiasing strictly for fonts?
11:07:05 FrankW: I did not think it was limited to fonts.
11:07:11 mdev: ok
11:07:37 mdev: just turned opn antialias
11:07:46 mdev: and it worked but it barely helped
11:08:54 mdev: do you think that by making the line as a symbol would make it less jagged or is really the same whether you make it line or as symbol?
11:09:04 FrankW: I do not know.
11:09:28 mdev: ok
11:23:25 mdev: do you know where to get the default symbols file that is referenced here to use?
11:23:25 mdev: http://mapserver.org/mapfile/symbology/construction.html#examples
11:23:26 sigabrt: Title: Cartographic Symbol Construction with MapServer MapServer 5.4.2 documentation ( at mapserver.org )
13:56:59 tbonfort_: ping hobu
13:57:04 tbonfort_: isn't the mapserver website supposed to refresh from svn every so often ?
14:01:59 mdev: are there any good examples of mapscript files to learn from?
14:10:46 mdev: can mapscript be used to basically dynamically create a mapfile on the fly and output the appropriate map?