[MapServer-users] How to format labels on contours
Trygve Aspenes
trygve at aspenes.priv.no
Sat Oct 21 01:25:32 PDT 2023
Thanks Seth
I'm sure I did try the setText method, but I forgot to mention that in
the post.
Thanks for the tip of convertToString() method.
Using your example I get
LABEL
<label parameters>
TEXT (tostring(([SQKM]),"%.0f")+" km2")
END # LABEL
And the expected label format in my contour layer.
Somehow I must missed something with I tried this in the first place, I
think the parentheses around tostring.
Thanks again!
Trygve Aspenes
Den 2023-10-21 09:04, skrev Seth G:
> Hi,
>
> The MapScript API docs are back online - see
> https://mapserver.org/mapscript/mapscript-api/stub/mapscript.classObj.html#mapscript.classObj
>
> The setText() method should give you what you need. Example (using
> Python):
>
> s = mapscript.classObj(layer)
> # other style and label stuff
> s.setText('(tostring(([SQKM]),"%.0f")+" km2")')
> # check the output using
> print(s.convertToString())
>
> When using updateFromString it will replace everything in the classObj
> hence the error.
>
> Seth
>
>
> --
> web:https://geographika.net & https://mapserverstudio.net
> twitter: @geographika
>
> On Fri, Oct 20, 2023, at 9:16 PM, Trygve Aspenes via MapServer-users
> wrote:
>> Hi
>>
>> So I have made a contour plot from a raster. Works nicely.
>> Then I added labels to give context to the contours. Fine.
>> Now I want to format the labels.
>>
>> I have found this post
>> https://gis.stackexchange.com/questions/350089/round-number-for-label-in-mapserver
>> suggesting a syntax:
>> TEXT (tostring(([SQKM]),"%.0f")+" km2")
>>
>> Nice, but I use mapscript. And I do not understand nor find any
>> examples
>> how I could do this with mapscript
>> I tried with:
>> s = mapscript.classObj(layer)
>> <other style and label stuff>
>> s.updateFromString('TEXT (tostring(([SQKM]),"%.0f")+" km2")')
>>
>> But I get:
>> EOFError: loadClass(): Premature End-of-File.
>>
>> So obviously not correct.
>>
>> Is there someone who could suggest what could be wrong here or what
>> else
>> to look at and try?
>>
>> Trygve Aspenes
>> _______________________________________________
>> MapServer-users mailing list
>> MapServer-users at lists.osgeo.org
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