David Martin wrote:
As you can see I am sizing the output symbol which is a 20x20px PIXMAP
image – this is working great however the position of the image needs to
be OFFSET up by half the size of the image (to make the actual point be
the center of the image) – I have tried using OFFSET however when the
image size changes (based on SYMBOLSCALE)the offsets are wrong. Is there
a way to OFFSET image symbols based on the SYMBOLSCALE and MAX/MIN SIZES?
David,
unfortunately, OFFSET behaves exactly the way you are pointing out, that
is, it doesn't scale because it's values are expressed in pixels no
matter what SIZEUNITS or SYMBOLSCALE.
As to the task you would like to accomplish, though, what about making
the image itself twice as tall and moving the symbol into the upper half
of the image, thus having the center of your image located beneath the
symbol itself? The image would still scale correctly and account for
offsetting the symbol by itself.
Best regards,
--
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Andreas Albarello
Analysis & SW Development
Territorium Online srl/GmbH
Via Buozzi Str. 12
I 39100 Bolzano/Bozen
Phone: +39 0471 068611
Fax: +39 0471 068619
email: [email protected]
web: http://www.territoriumonline.com
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