topic ArcGIS Pro SDK support for linear referencing? in ArcGIS Pro SDK Questions

ArcGIS Pro SDK support for linear referencing?

daleward — Wed, 10 Oct 2018 21:35:52 GMT

Does the ArcGIS Pro SDK support linear referencing? Specifically, some of the functionality exposed by the ArcObjects IMSegmentation interface.

Methods such as:

GetSubcurveBetweenMs (gets the geometry defined on a route between measure m1 and m2)
GetPointsAtMs (gets the points from a route where a specific measure occurs)
SetMsAsDistance (sets the measures on a route based on distances)

So far, the closest I've found has been the CIMMarkerPlacementAtMeasuredUnits, which "Represents marker placement at geometry M values."

Is there other support in the SDK , and I'm just looking in the wrong place?

If that's the case - where should I look?

Thank you - Dale

Re: ArcGIS Pro SDK support for linear referencing?

DanPatterson_Retired — Wed, 10 Oct 2018 21:50:36 GMT

If you search the ArcGIS Pro help, then select the SDK portion over on the left, you will get a number of hits from the SDK help...

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Re: ArcGIS Pro SDK support for linear referencing?

daleward — Wed, 10 Oct 2018 21:51:45 GMT

Think I found it. The IGeometryEngine interface in the ArcGIS.Core.Geometry namespace has a GetSubCurve() method. That ought to work.

Bet the others are in here, too.

Thanks all - Dale

Re: ArcGIS Pro SDK support for linear referencing?

DanPatterson_Retired — Wed, 10 Oct 2018 21:59:34 GMT

check the help topic access as well, it is pretty good. Just make sure you have the SDK portion of the help selected

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Re: ArcGIS Pro SDK support for linear referencing?

AnnetteLocke — Thu, 11 Oct 2018 17:04:14 GMT

Hi Dale,

GetSubCurve() is not exactly what you want, but you can probably make it work. We will add the three methods that you have listed above. I'm sure other people will make use of them too.

Thank you for the feedback.

Annette

Re: ArcGIS Pro SDK support for linear referencing?

daleward — Thu, 11 Oct 2018 17:18:44 GMT

Thank you Annette. I was just about to post a follow-up question regarding what to do if the measures on the route don't match the distance, so your reply is most timely

There may be a couple of other functions from IMSegmentation that we need as well - I'll post here as I come cross them.

Re: ArcGIS Pro SDK support for linear referencing?

daleward — Thu, 11 Oct 2018 17:59:14 GMT

Hi Annette -

From IMSegmentation, we'll need:

GetSubcurveBetweenMs
GetPointsAtMs
SetMsAsDistance
MMax
MMin
MMonotonic
SetAndInterpolateMsBetween

When you folks implement these - are you interpolating between the known coordinate/measures, or is there more complicated geometry going on? We will be using projected coordsys...

So...if you have a route points at measure 0 and 100, and you need coordinate at measure 50, are you taking the coords at the 0 and 100 points and interpolating? Or is it harder than that?

As a stopgap until yours are available, we are thinking about writing our own, is why I ask.

Thank you - Dale

Re: ArcGIS Pro SDK support for linear referencing?

AnnetteLocke — Thu, 11 Oct 2018 21:40:29 GMT

We are interpolating between known coordinates/measures. Nothing harder than that.

Re: ArcGIS Pro SDK support for linear referencing?

daleward — Mon, 15 Oct 2018 20:15:02 GMT

Looks like we'll also need to implement GetNormalsAtM()

Re: ArcGIS Pro SDK support for linear referencing?

AnnetteLocke — Wed, 17 Oct 2018 17:28:24 GMT

Hi Dale,

We have put all the requested methods into ArcGIS Pro 2.3 which will be released early 2019.

Thanks again for the feedback.

Take care,

Annette

Re: ArcGIS Pro SDK support for linear referencing?

SteveHossack — Wed, 17 Oct 2018 23:31:36 GMT

Hi Annette,

The IMSegmentation methods in ArcObjects were really helpful. I was disappointed that they weren't in the Pro API yet. I'm glad to hear that they will be in there soon. Looking forward!