[mapserver-users] Question about python mapscript and point style.

[Seth G]

Hi,

The following example works for me - 2 styles are in the output Mapfile. Maybe there is an issue elsewhere?
Is there a Python error, or is the output not what you are expecting?

import mapscript

m = mapscript.fromstring("""
MAP
 LAYER
 NAME "test"
 TYPE POINT
 CLASS
 NAME "0"
 STYLE
 COLOR 0 0 0
 SYMBOL 1
 SIZE 13
 END
 END
 END
END
""")
lyr = m.getLayerByName('test')
cls = lyr.getClass(0)
style = mapscript.styleObj()
style.color.setRGB(0, 0, 0)
style.symbol = 1
style.size = 3
cls.insertStyle(style)
print(m.convertToString())

For Mapfile manipulation in Python you could also try https://pypi.org/project/mappyfile/
Regards,

Seth


--
web:http://geographika.co.uk
twitter: @geographika


On Sat, Nov 23, 2019, at 2:44 PM, Vladimir wrote:
> Hi all again!
> 
> Seth, thank you for response.
>  I tried this way with a single Point layer, unfortunately this also does not work.
> 
>  --
>  Regards, Vladimir.
>> 23 2019, 2:41 +06:00 от Seth G <sethg at geographika.co.uk>:
>> 
>> Hi Vladimir,
>> 
>> Could you try the following syntax?
>> 
>> new_style = new mapscript.styleObj()
>> new_style.symbolname = 'circle'
>> new_style.size = 10
>> the_class.insertStyle(new_style)

>> 
>> 
>> Also make sure your variables aren't overriding the class names - e.g. maybe use different variable names than classObj.
>> 
>> Regards,
>> 
>> Seth
>> 
>> --
>> web:http://geographika.co.uk
>> twitter: @geographika
>> 
>> 
>> On Fri, Nov 15, 2019, at 6:12 PM, Vladimir wrote:
>>> Hi all!
>>> 
>>> I unsuccessfully try to style ‘Point’ layer with following code:
>>> (first)
>>>  style = mapscript.styleObj(classObj)
>>>  style.symbolname = 'circle'
>>>  style.size = 10
>>>  style.color = mapscript.colorObj(255, 0, 0)
>>> 
>>> No error, no picture as result of using this method.
>>> But similar approach works for ‘Line’ and ‘Polygon’ layers.
>>> 
>>> Also I figured out working method for the ‘Point’ layer:
>>> (second)
>>> classObj.updateFromString("CLASS STYLE COLOR 255 0 0 SIZE 10 SYMBOL 'circle' END END")
>>> 
>>> Output of ‘layer.convertToString()’ is the same for both methods:
>>> LAYER
>>>  CONNECTION \"dbname='db' host='db' user='user' password='1'\"
>>>  CONNECTIONTYPE POSTGIS 
>>>  DATA \"value FROM (SELECT value FROM points WHERE ST_Intersects(value, !BOX!)) AS subquery USING UNIQUE id USING srid = 3857\"
>>>  LABELITEM \"name\"
>>>  NAME \"points\"
>>>  STATUS ON
>>>  TYPE POINT
>>>  UNITS METERS
>>>  CLASS
>>>  NAME \"points\"
>>>  STYLE 
>>>  COLOR 255 0 0
>>>  SIZE 10 
>>>  SYMBOL \"circle\"
>>>  END # STYLE
>>>  END # CLASS
>>> END # LAYER
>>> 
>>> How to get working ‘Point’ style using first method?
>>> MapServer version: 7.2.1
>>> 
>>> Thanks!
>>> 

>>> --
>>> Regards, Vladimir.
>>> 

>>> 

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> 

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