Questions tagged [m-values]
The m-values tag has no usage guidance.
5 questions with no upvoted or accepted answers
2
votes
0
answers
52
views
Generating cumulative M-values in QGIS
I have a linear dataset in QGIS each vertex in each line has an X, Y and Z values. I want them to have M values. There is a set M value tool but it only seems to set a single value to each vertex i.e. ...
- 21
2
votes
0
answers
82
views
Creating multipoints from points and setting incrementing M value in spatialite
I have a layer of points, which I want to group into multipoints grouping by some column. This part is easy:
SELECT name_pre, CastToMulti(GUnion(geometry)) AS geometry
FROM sp_survey
GROUP BY ...
- 21
1
vote
1
answer
802
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LRS SDO_GEOMETRY to "LINESTRING M" WKT format
I have a query that produces an LRS SDO_GEOMETRY as WKT (Oracle 18c):
select
SDO_UTIL.TO_WKTGEOMETRY(SDO_LRS.CONVERT_TO_LRS_GEOM(sdo_geometry('LINESTRING(1 2,3 4)')))
from
dual
Output:
...
- 1,272
1
vote
0
answers
241
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Adding M values to a shapefile so the distance along the line is displayed as a derived attribute in QGIS
I'm new to QGIS which I'm using to create data for a road network. I have a road network setup as a polyline shapefile, but need to identify the chainage long the network sections to use in other ...
- 11
1
vote
0
answers
2k
views
View M value in QGIS
I've got a ".shp" file (plus the additional .dbf, .fix, .prj, .shx files) that was created using the geotools library and want to view its data using QGIS 3.8.2.
QGIS properly displays all of the ...
- 291