You weren't labeling slices with PHP from the looks of it, just the underlying
feature using an annotation layer. So setting up a layer to behave like an
annotation layer is doable... Here's a simple snippet for the state of
Minnesota polygon:
LAYER
NAME bdry_statepy2
STATUS DEFAULT
TYPE POLYGON
DATA ' bdry_statepy2'
CLASS
LABEL
TEXT 'Minnesota'
POSITION CC
SIZE LARGE
COLOR 0 0 0
END
END
END
Basically using a class with no styles.
I don't recall the individual chart components (pies, bars, etc...) as being
labelable. It's not covered in the docs or the original RFC. I will whip up a
test case to confirm the behavior though.
--Steve
-----Original Message-----
From: Nicol Hermann [mailto:mapser...@geoworld.de]
Sent: Thursday, August 01, 2019 12:33 PM
To: Lime, Steve D (MNIT) <steve.l...@state.mn.us>;
mapserver-users@lists.osgeo.org
Subject: Re: [mapserver-users] labels for pie|bar charts
This message may be from an external email source.
Do not select links or open attachments unless verified. Report all suspicious
emails to Minnesota IT Services Security Operations Center.
Hello Steve,
you are right. With older versions of Mapserver I used 2 layers.
One for the chart (type=chart) and the other one to do the labeling
(type=annotation).
I used PHP Mapscript at that time. See the code snippet for the
annotation layer below. It uses the same data source like the chartlayer.
$layer = ms_newLayerObj($Map);
$layer -> set('status', MS_ON);
$layer -> set('labelcache', MS_ON);
$layer -> set('type', MS_LAYER_ANNOTATION );
$layer -> set('data', $datapath);
$layer -> set('status', MS_ON);
$poClass = ms_newClassObj($layer);
$poClass-> set("name", "Beschrifung " );
$felder= '(';
foreach( $chartLayer['fieldlist'] as $feld ){
$felder .= sprintf('%s = [%s]-', $feld, $feld);
}
$felder .=sprintf(')');
$poClass->settext($layer, "$felder");
$poClass-> label -> set('font', "arial");
$poClass-> label -> set('type', MS_TRUETYPE);
$poClass-> label -> set('size', 8);
$poClass-> label -> set('antialias', MS_TRUE);
$poClass-> label -> color -> setRGB ( 0, 0, 0 );
$poClass-> label -> set ('wrap', 0x2d); // use '-' to do a line break
$poClass-> label ->set('position', MS_AUTO);
$poClass-> label ->set('partials', MS_FALSE);
$poClass-> label ->backgroundcolor->setRGB('240','240','240');
Unfortunately this approach do not work anymore as the annotation type
is not longer supported.
The MapFile which I am trying currently looks like this:
LAYER
DATA
"/home/nicol/public_html/geoworld/gw2_1und1/data/brd/media.shp"
LABELITEM "NAME"
NAME "Staedtecharts"
PROJECTION
"init=epsg:4326"
END # PROJECTION
STATUS DEFAULT
TYPE CHART
# PROCESSING "CHART_SIZE_RANGE=bevzahl"
# PROCESSING "CHART_SIZE=130" # Fixe Groesse
PROCESSING "CHART_TYPE=pie" # pie, bar
PROCESSING "CHART_SIZE_RANGE = itemname minsize maxsize minval
maxval exponent"
PROCESSING "CHART_SIZE_RANGE=bevzahl 30 300 100000 2000000"
LABELITEM "NAME"
UNITS DD
CLASS
NAME "Maennlich"
TEXT 'Hallo'
LABEL
FONT "arial"
SIZE 30
COLOR 255 0 0
ENCODING "UTF-8"
MINFEATURESIZE AUTO
OFFSET 0 0
POSITION AUTO
SHADOWSIZE 1 1
END # LABEL
STYLE
COLOR 192 192 192
OUTLINECOLOR 0 0 0
SIZE [mann]
END # STYLE
END # CLASS
CLASS
NAME "Weiblich"
STYLE
SIZE [frau]
COLOR 255 255 0
OUTLINECOLOR 0 0 0
END
END
END # LAYER
My hope was that the chart type now also takes care of the labeling.
Any idea how to realize the labeling for the individual slices now?
Thanks
Nicol
Am Donnerstag, den 01.08.2019, 14:34 +0000 schrieb Lime, Steve D
(MNIT):
> Hi Nicol: Do you you have a sample mapfile that showed your approach?
> Since CHART and ANNOTATION are both layer types that implies multiple
> layers. --Steve
>
> -----Original Message-----
> From: mapserver-users [mailto:mapserver-users-boun...@lists.osgeo.org
> ] On Behalf Of Nicol Hermann
> Sent: Wednesday, July 31, 2019 2:52 PM
> To: mapserver-users@lists.osgeo.org
> Subject: [mapserver-users] labels for pie|bar charts
>
> This message may be from an external email source.
> Do not select links or open attachments unless verified. Report all
> suspicious emails to Minnesota IT Services Security Operations
> Center.
>
>
>
> Hello,
>
> I am trying to understand how labeling/annotation with layer type
> 'chart' for the individual slices e.g. of a PIE/BAR chart would work
> (
> https://gcc01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmapserver.org%2Foutput%2Fdynamic_charting.html&data=02%7C01%7Csteve.lime%40state.mn.us%7Ca807c021ad0c41a044b308d716a64292%7Ceb14b04624c445198f26b89c2159828c%7C0%7C1%7C637002775647669862&sdata=2vmqPRuyR7SHIQIW%2BGwqRqDsvjeMsC8O6Jfcpu1lYJg%3D&reserved=0).
> I have tried to set a LABELITEM on layer level, a LABEL block within
> the CLASS section, a TEXT property in the CLASS block but none of my
> attempts show any labels.
> In earlier versions of Mapserver I have used the ANNOTATION layer
> type
> to get labels but this type is now deprecated for 7.x versions.
> Any ideas?
> Thank you very much.
>
> Nicol
>
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