Diagrams/FAQ: Difference between revisions
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=== Can I render a diagram to the screen and then know which part of the diagram a user has clicked on? === | === Can I render a diagram to the screen and then know which part of the diagram a user has clicked on? === | ||
Yes. See the user manual section on [http://projects.haskell.org/diagrams/ | Yes. See the user manual section on [http://projects.haskell.org/diagrams/doc/manual.html#using-queries using queries]. | ||
=== When I try to compile, the linking phase hangs eating CPU and never finishes === | === When I try to compile, the linking phase hangs eating CPU and never finishes === | ||
Latest revision as of 03:41, 29 January 2014
Diagrams frequently asked questions.
Miscellaneous
Can I render a diagram to the screen and then know which part of the diagram a user has clicked on?
Yes. See the user manual section on using queries.
When I try to compile, the linking phase hangs eating CPU and never finishes
It seems this can be caused on OS X by a mixture of 32- and 64-bit libraries. For example see this bug report. Ensure that your GHC and your gtk libraries are either both 32-bit or both 64-bit.
Error messages
Couldn't match type `V (Point R2)' with `R2'
This is due to a bug in GHC. As a workaround, you can simply add the import
import Diagrams.Core.Points
to your file. See also the user manual.