Used for questions about making polyline features

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2answers
1k views

How to import matlab data into ArcMAP?

I'm creating regression lines using matlab from points having UTM geographic coordinates. I would like to import those regression lines into a map of the same area in ArcMAP. My question is what ...
2
votes
1answer
1k views

Conversion of raster features to polylines: skeletonization?

I would like to identify linear features, such as roads and rivers, on raster maps and convert them to a linear vector features (i.e. polylines). I typically use R as my primary GIS, and have posed ...
11
votes
4answers
4k views

Connecting line features and determining the length of the longest line

I have a line feature (see image) representing a river that I created using the Stream_to_Feature tool. The attribute table contains several records representing different lines - the problem is the ...
4
votes
1answer
683 views

Why is my polyline on the wrong bearing?

I am trying to overlay duplicate segments of polylines on a map via javascript. I am using latlon.js and geo.js from here The idea is that a user can input the distance they have travelled and when ...
0
votes
1answer
1k views

Mapinfo incorrect polyline (boundary) map to region conversion

How to solve issue regarding incorrect boundary to region conversion? I have boundary map plotted on cosmetic layer when I convert it to region it results in line with overlap to other region. The two ...
6
votes
3answers
3k views

Connecting markers by following the roads in Google Maps

I have many markers in a kml file. All the markers are on the roads. I wonder if there is a way to process the data and connect the markers by following the road? Of course, the markers should not be ...
6
votes
4answers
1k views

Deriving separate polylines from coded points using ArcObjects (Figure inside)

I have a single point featureclass that represents the left and right sides of a landform (the points are coded as either 'right' or 'left'). Visually I can pick out and digitize two lines along these ...
2
votes
3answers
2k views

ArcGIS 10's Editor and Snapping toolbars question (snapping polyline to another polyline)

Have attempted this about 20 different ways using Editor / Snapping Toolbars and ET GeoWizards but still cannot find solution. Screen shot is attached. Need to snap the green polyline to the red ...
4
votes
4answers
2k views

How to determine a point lays within a polyline in arc engine?

I recently asked a similiar question on this, however I needed to know if there is a way to solve this if I only have a IPolyline Feature, and not the whole layer. I want to know if I can determine ...
2
votes
0answers
236 views

How can I create a parallel lines in a MULTILINESTRING table using Postgis? [duplicate]

Possible Duplicate: How to create one-sided buffers or parallel lines in PostGIS? I need to make parallel lines on a MULTILINESTRING table, similar to st_buffer, but that the result come be ...
3
votes
1answer
1k views

Openlayers Add features performance for 3000 lines

We would like to implement the function of Addfeature in openlayers to draw lines and push them onto a vector layer, and overlay this layer onto open street map or google map. Those lines are draw ...
4
votes
3answers
1k views

Get part of polyline based on 2 points in Arc Engine

Currently I have a layer with polylines; in another layer, I allowed the user to create 2 points on the polyline. I want to know if there is a function for the polyline feature that I can use to get ...
5
votes
1answer
289 views

Creating dynamic links between features

I currently want to create links between 2 features. Ie., I have 2 basins that flow out and I want to use a line/polyline to have a link out of them and both point to a common 3rd feature, indicating ...
3
votes
2answers
1k views

Is there a way to make a straight line in ArcEngine 10 (Polyline but with ONLY start and end)

So I want to allow the user to create a connection between 2 polygons on my map. So it doesn't make sense to allow them to draw polyline with multi points. My question is, is there a way I can do ...
8
votes
4answers
540 views

Joining lines when direction is not known

I am struggling with this problem. I have a polyline made up of several segments. Each segment is made up of points, each point identified in 3D space by coordinates and elevation. Together, if ...
4
votes
5answers
2k views

script for automated line drawing procedure for set of start and end points

A colleague conducted a field survey and recorded the start and end points of the transects with a GPS. These points have been imported to ArcMap 9.3 as 2 point layers. Both layers have a "transect ...
4
votes
1answer
505 views

Convert Landmask file into WKT Polygon

I have a land mask file in netCDF (also in ascii, if needed) which basically consists of a lat/long pair and a boolean (1 or 0) determining if that value is over land or not. The thing is, I'm not ...
4
votes
1answer
412 views

How can a single line be computed from multiple possibilities

I have datasets containing continuous GPS streams of data that represent routes or trails. For any given route, I probably have at least 5 (in some cases many more) different sets of data. Given that ...
17
votes
3answers
6k views

Find tunnel 'center line'?

I have some map files consisting of 'polylines' (each line is just a list of vertices) representing tunnels, and I want to try and find the tunnel 'center line' (shown, roughly, in red below). I've ...
6
votes
9answers
11k views

ArcGIS: Create a line layer from a point layer and csv data file

UPDATED DECEMBER 20 I have a Regular point layer and a csv file that has the same ids as the point layer. The csv file is organized as ID From To Weight -- ---- -- ------ 01 ...