Skip to main content
Solved

How to extract coordinates of start and end line and get the relates id of each point (start/end)

  • December 1, 2023
  • 9 replies
  • 854 views
gogopotter90
Contributor
Forum|alt.badge.img+14

Hello ,

i am confused in my workspace .

i would like to extract the coordinates of start point and end point of the lines .

So I used coordinates extractor index 0 , and other coordinates extractor index -1 .

so I got the coordinates .

but how I know , this coordinates belong for which point id ( I mean which side of line is start and which side is -the end ) and depends on what ?

my target to get the coordinates and the relates points id to it .

I would like to get theses attributes

ID line | id point start | coordinates (x)start | coordinates (y) end | id point end |coordinates (x) end |coordinates (y) end

as example .

see picture , I need to extract the coordinates of each line ( start and end ) and know which id of the point that relates to this coordinate

Fme 2021

 

Best answer by takashi

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

Good to hear the workflow helps you.

You can avoid overwriting the same attribute names by setting Prefix Supplier to the Accumulation Mode parameter and set an appropriate prefix to the Prefix parameter, in the FeatureMerger.

Please check again the screenshot I posted.set-prefix-with-featuremerger

1 Attachments
This post is closed to further activity.
It may be an old question, an answered question, an implemented idea, or a notification-only post.
Please check post dates before relying on any information in a question or answer.
For follow-up or related questions, please post a new question or idea.
If there is a genuine update to be made, please contact us and request that the post is reopened.

9 replies

redgeographics
Celebrity
Forum|alt.badge.img+61

Just to clarify: you have those id points already, correct?

 

If that's the case you can use 2 VertexCreators to create the actual start and end points of the lines from your attribute values, then a NeighborFinder to match them with the id points. Then you have to bring it all back to the original lines again (FeatureMerger for example).

FME rocks! \m/
gogopotter90
Contributor
Forum|alt.badge.img+14
  • gogopotter90Contributor
  • Author
  • Contributor
  • December 1, 2023

Just to clarify: you have those id points already, correct?

 

If that's the case you can use 2 VertexCreators to create the actual start and end points of the lines from your attribute values, then a NeighborFinder to match them with the id points. Then you have to bring it all back to the original lines again (FeatureMerger for example).

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

takashi
Celebrity
  • takashiCelebrity
  • December 1, 2023

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

HI @gogopotter90​ ,

Do you have point features each of which has point ID as its attribute? If yes, does a point exactly match start or end of a line?

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
gogopotter90
Contributor
Forum|alt.badge.img+14
  • gogopotter90Contributor
  • Author
  • Contributor
  • December 2, 2023

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

Yes.

I have point id and it matches sometimes exactly the start or end of line

or it is close from the start or end of line and I have to use neighbour finder to find (which point of start /end line close to ) .

takashi
Celebrity
  • takashiCelebrity
  • December 2, 2023

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

I think ToplogyBuilder helps you to transfer attributes of point feature (point ID, x-coordinates and y-coordinates) to the lines.

Try the workflow shown in the attached screenshot. Probably you will have to set an appropriate value to the Tolerance parameter in the TopologyBuilder.topologybuilder-exampleAdditionally, if you would like to make coordinates of all the end nodes of lines exactly match the points, you can use AnchoredSnapper to do that before TopologyBuilder.

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
takashi
Celebrity
  • takashiCelebrity
  • December 2, 2023

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

This is an example using AncheredSnapper

topologybuilder-anchoredsnapper-example

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
gogopotter90
Contributor
Forum|alt.badge.img+14
  • gogopotter90Contributor
  • Author
  • Contributor
  • December 4, 2023

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

Thanks a lot .

it works great , I needed only to add rename after first feature merger for point id and coordinates .because the result has overwritten on same name of point id so I added rename but it works great .

takashi
Celebrity
  • takashiCelebrity
  • Best Answer
  • December 4, 2023

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

Good to hear the workflow helps you.

You can avoid overwriting the same attribute names by setting Prefix Supplier to the Accumulation Mode parameter and set an appropriate prefix to the Prefix parameter, in the FeatureMerger.

Please check again the screenshot I posted.set-prefix-with-featuremerger

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
gogopotter90
Contributor
Forum|alt.badge.img+14
  • gogopotter90Contributor
  • Author
  • Contributor
  • December 5, 2023

This is was my problem .

i have did what u do before but I was so confusing .

I have the points id ,you are right

i will exapling in Details .

i know the start point id and end point id

and I have added a list on the line

so the line has now more details ,about the point that it connects with .

id line , id point a ,id point b

later after I use 2 vertex creator and find points by neighbour finder .

how to merge them with 2 point id at the same Line ?

i am really confusing about it .

Bcs as example

i have 3 end line ( points id ) are the same id .

so when I do merge May be ,coordinates go to wrong line .

when the id is the same .

(the id is same at some end lines Bcs I have used buffer and cut the lines that connect together in one point

so instead of one point ,I have different point include same point id .

please , id U can provide me with temperate solution .or screenshot ,will be better for me to get clear ur solution .

thanks a lot in advanc

 

Thanks a lot ,I have seen it now

Community Stats

32,120
Posts
121,954
Replies
39,772
Members

Latest FME

Terms & ConditionsCookie settingsAccessibility statement
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.