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PolygonZ

J

JpP

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36
Country
france
Hi everybody

Got a persisting problem with ScenProc and the message "Shapetype PolygonZ is not implemented".
What is that Shapetype PolygonZ?
Is it related to elevation? I have found nothing related to that notion in the .dbf file; I have deleted every column else than "Type"; I have restricted my area to ONE poly; nothing helps :mad:

Any idea welcome :wizard:

Thanks a lot

JpP
 
Last edited:
Hi JpP and other with the same error...

it seems that PolygonZ are multi-dimmensional polygon. You need to apply the option below in Qgis before put it into scenproc:

in Qgis try:
Vector-> Geometries Tools -> Multipart to single Part

enjoy :)
 
Hi,

If you can send me an example shapefile, I can check if I can fix this bug.
 
Vogel said:
Hi JpP and other with the same error...

it seems that PolygonZ are multi-dimmensional polygon. You need to apply the option below in Qgis before put it into scenproc:

in Qgis try:
Vector-> Geometries Tools -> Multipart to single Part

enjoy :)
Click to expand...

Thanks a lot for the advice; it works!!! But you already know ;)

Regards

JpP
 
For me PolygonZ seems to be a Group(like a List<polygon>) of attached polygon.

PolygonZ = Polygon1 + Polygon2 + polygon3 + ...

may be it can be usefull to add support of PolygonZ into scenproc... but may be it's already made ?

For example it would be usefull for adding "hole" into forest polygon or into building like closed Polybuilding ? or other shape may be? But it should be worked hard (sliced, cuted...) into scenproc before to get something complient to the AGN's format .
 
OK, I'll take a look if I can find out why the file gives this error.
 
Hi,

I have made some changes to scenProc. From the next development release it can also read shapefile types PolygonM, PolygonZ and PolyLineM.

Be aware that scenProc does not use the M or Z values stored with the features at the moment.
 
Shape type in XY Space
Polygon
A Polygon consists of one or more rings. A ring is a connected sequence of four or more points that form a closed, non-self-intersecting loop. A polygon may contain multiple outer rings. The order of vertices or orientation for a ring indicates which side of the ring is the interior of the polygon. The neighborhood to the right of an observer walking along the ring in vertex order is the neighborhood inside the polygon. Vertices of rings defining holes in polygons are in a counterclockwise direction. Vertices for a single, ringed polygon are, therefore, always in clockwise order. The rings of a polygon are referred to as its parts.

Because this specification does not forbid consecutive points with identical coordinates, shapefile readers must handle such cases. On the other hand, the degenerate zero length or zero area parts that might result are not allowed.
...

Measured Shape type in XY Space
PolygonM
A PolygonM consists of a number of rings. A ring is a closed, non-self-intersecting loop. Note that intersections are calculated in XY space, not in XYM space. A PolygonM may contain multiple outer rings. The rings of a PolygonM are referred to as its parts.
...

Shape type in XYZ Space
PolygonZ
A PolygonZ consists of a number of rings. A ring is a closed, non-self-intersecting loop. A PolygonZ may contain multiple outer rings. The rings of a PolygonZ are referred to as its parts.
...

http://publib.boulder.ibm.com/infocenter/idshelp/v111/index.jsp?topic=/com.ibm.spatial.doc/spat36.htm
 
arno said:
Hi,

I have made some changes to scenProc. From the next development release it can also read shapefile types PolygonM, PolygonZ and PolyLineM.

Be aware that scenProc does not use the M or Z values stored with the features at the moment.
Click to expand...

Hi Arno

Thank you for that update; no more problems with my XYZ shapes!!!

Have a good day.

JpP
 
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