+6
simple Questionhow can I create station points in FME?
i have a line object (shape and in one attribute the measure length)
and i want create station points every 100m (for example) which have an attribute with measurement (for example 100....200......300 and so on)
Thank you
Franco
Best answer by takashi
For example, if the interval is 100m, you can then calculate the measure value by multiplying the sequential number by 100.
If there are multiple lines to be processed, specify unique ID attribute of lines to Counter Name parameter of the Counter, so that the sequential numbers will be grouped by lines. If there is not ID, consider using another Counter to add temporary ID to each line.
Of course you can create your own workflow to create interval points. That will be an interesting challenge.
+19
I think the DistanceMarker_2013 from FME Store is suitable to do that.
Takashi
+6Thanky ou very much,
so i can create the points, but which transformer helps me to put the measure (e.g.100m, 200m, 300m,...) as an attribute on teh points?
Greetz
Franco
+19For example, if the interval is 100m, you can then calculate the measure value by multiplying the sequential number by 100.
If there are multiple lines to be processed, specify unique ID attribute of lines to Counter Name parameter of the Counter, so that the sequential numbers will be grouped by lines. If there is not ID, consider using another Counter to add temporary ID to each line.
Of course you can create your own workflow to create interval points. That will be an interesting challenge.
+19Maybe the Cloner and Snipper can be used to create equal interval points along a line.
-----
1) Calculate number of required points (ExpressionEvaluator or AttributeCreator).
number of points = int(line length / specified interval) + 1
Length of the line can be calculated with the LengthCalculator or @Length function.
2) Copy the line by the number of points (Cloner).
Copy Number Attribute (named "_copynum" by default) will be 0-based sequential number.
3) Calculate measurement (distance to resultant point from start of the line).
_measure = _copynum * specified interval
4) Transform the line into a point (Snipper).
Snipping Mode: Distance (Value)
Start Location: _measure
End Location: _measure
The Snipper transforms a line into a point if End Location is equal to Start Location.
-----
There are several ways to do that. Cloner + Snipper is one of them.
+6Hi Takashi,
this issue is now actual again.
i've worked with the Distance Maker, Length Calculator to get station points...that works perfectly
BUT:
i want the measures from the points as an attribute (Measureextractor)...
works also fine
BUT:
the end point of the line has the wrong measure.
for example: i have a line with a length 18369,67 meters
every 100 meters i have station points
so the ponit before last point has measure 18300 .....thats right
the end point of the line has measure 18400......thas false!!!!!!
so is there a way to bring the right measure (maybe the length from the line) in the attribute from the end point of the line?
Thanx
Franco
+19Hi @franco69, dear old subject :-)
Later I've published a custom transformer called LineDivider in the FME Store. This transformer can propagate measure dimension from the input line to the output lines and points. Try this.
For example, if the interval is 100m, you can then calculate the measure value by multiplying the sequential number by 100.
If there are multiple lines to be processed, specify unique ID attribute of lines to Counter Name parameter of the Counter, so that the sequential numbers will be grouped by lines. If there is not ID, consider using another Counter to add temporary ID to each line.
Of course you can create your own workflow to create interval points. That will be an interesting challenge.
For example, a line with
start m-val = 341.3456 metre
end m-val = 1468.356 metre
and want to mark every 100 or 500 interval. How could this be done?
thanks andre
+19For example, a line with
start m-val = 341.3456 metre
end m-val = 1468.356 metre
and want to mark every 100 or 500 interval. How could this be done?
thanks andre
+19For example, a line with
start m-val = 341.3456 metre
end m-val = 1468.356 metre
and want to mark every 100 or 500 interval. How could this be done?
thanks andre
If you need to get the point whose m-value is exactly match 842.500, the Snipper transformer might help you.
If you need to get the point whose m-value is exactly match 842.500, the Snipper transformer might help you.
regards
andre
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