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Questions tagged [line]

A set of ordered co-ordinates that represent the shape of geographic features too narrow to be displayed as an area at the given scale (contours, street centrelines, or streams), or linear features with no area (county boundary lines)

1
vote
3answers
774 views

Divide Line Into Sections Using Points Offset from It in ArcGIS Desktop?

I have track (line) and milemarkers (point). Each point is offset by a different distance. Is there a way to find where each point would intersect the line if going perpendicularly out from the line? ...
2
votes
1answer
561 views

merging TIGER Line shp files for better labeling in ArcGIS

When working with TIGER line shp data at county level scale the labeling of roads, rivers, railroads, etc. is cumbersome due to all of the tiny line segments. Merging the dozens of segments that ...
1
vote
2answers
6k views

Show pop-up where user clicked in OpenLayers

How to change this example ( http://openlayers.org/dev/examples/select-feature-openpopup.html ) so that when the user clicks on a line (feature) pop-up display where the user clicked? A few days ...
4
votes
1answer
202 views

How best to map lines based on multiple attributes?

I need to plot lines onto a map to display road quality. I'm already using colours to distinguish between different road conditions, but I also need to display another factor - the survey origin. ...
2
votes
1answer
2k views

Basic User Questions: Tracing a Border in QGIS

The project: I'm plotting a dilapidated cemetery, I'm using GPS waypoint data to plot the headstones in QGIS. The map I'm making is to show the orientation of the graves, and who is in them. I ...
1
vote
1answer
837 views

split multi line by use of distance field [duplicate]

Possible Duplicate: Splitting lines automatically at specific distances? i have a transect layer with 160 transect . id like to split each transect with specific value from the beginning of the ...
10
votes
6answers
7k views

Get a point on a polyline from end points given distance along poly line

I have start point and end point of a polyline. How can I get a point on that polyline from end points specified by the given distance. How can I get this by using arcpy provided that this script ...
2
votes
2answers
3k views

Get all polylines from a shapefile (containing polylines)

I have a *.shp file which contains only polyline features. How can I iterate over all the point features. Given ESRI Polyline example only uses already defined points to make polylines. But I want to ...
5
votes
1answer
2k views

Splitting lines at a specified distance

Does exist some plugin with it is possible to Splitting lines at a specified distance in Qgis?
11
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1answer
42k views

Calculating elevation profile for a polyline in ArcGIS 10?

My elevation data is a floating point tif. I have a road for which I need to calculate the elevation profile, but I can't see the tools to do this. Can I do this with ArcGIS, with spatial analyst/3D ...
1
vote
1answer
1k views

Polymaps + D3+ Polyline with different width and color

I am actually working on a project which involves polymaps and D3. I was wondering if you could help me on this. I have 4 locations and I would like to draw a polyline from one location to other 3 ...
6
votes
1answer
917 views

Filling a polygon with lines using Postgis

I need to calculate a specific distance in an area. The distance is calculated from parallel lines in a polygon, And I need to find out how many parallel lines (with x meters distance to each other) ...
3
votes
3answers
972 views

Selecting polygons with a minimum internal straight line value - ArcGIS 10

I have a map of polygons representing forest stands. I am trying to sort through them to find those polygons that have a minimum internal distance of 200 m in a straight line (my field sampling will ...
2
votes
1answer
844 views

How to move a Point perpendicular from nearest Line?

I want to move Point perpendicular from nearest line or polygon, and the question is how to do that? example, I have points (house number) near roadbed, and I don't want them to intersect roadbed (...
3
votes
2answers
558 views

Housenumber(point) angle from line (street)

using arcgis 10 with Point data (Housenumber without angle attribute) and line data (street without angle attribute) I want to create housenumber labels from point with correct angle from nearest ...
2
votes
2answers
1k views

editing existing lines

I have a quick editing question. I have a main line (street) from which I want to extend other small lines to reach some points (manholes), but I want to keep just one feature (the main line). I can'...
1
vote
0answers
404 views

ArcGIS10 Split Line at Point Failing due to Dataset size

Im having an Issue with my Split Line at Point tool. Seems to run if lucky for 700 entries before arcmap/arccatalog falls over. Debugging of the errorlog has produced nothing. The total size of the ...
1
vote
1answer
1k views

ArcGIS 10.x Create equidistant polyline that are perpendicular to an axis

I have a polyline that represents a cyclone track and I want to create equidistant polyline that are perpendicular to the cyclone track.
2
votes
2answers
807 views

Setting up drawing order for point shapefile

I am having a difficulty with creating polyline feature from a point dataset that represents a boundary. This dataset consists of 5084 points which are randomly ordered. I have no Network Analyst ...
12
votes
5answers
61k views

Creating polygons from lines using ArcEditor/Standard level license of ArcGIS Desktop?

I am trying to create polygons from a line layer of lots and concessions (large blocks of land in rural areas). The lines are mainly grid style as they intersect mostly at right angles. I need to ...
6
votes
1answer
21k views

Create point in intersections of two layers

I have two layers. One of them is 'Road_line' and another one is 'forest_shape'. I want to create a point layer that has points in intersection of that layers. I couldn't find any tools for it.
11
votes
2answers
2k views

Creating line (closest vertex to line) using ArcGIS Desktop?

I'm using ArcInfo 10 SP3. I am working in reorganising our utility data. Two years ago, we have started collecting Private Service water line. We still have a lot of them to extract from old ...
3
votes
3answers
14k views

Polyline length calculation in ArcGIS 10/VB script

I used to run this length calc on my data in ArcGIS 8 and 9, and now it don't work in ArcGIS10. Can you tell me what I have done wrong? Dim dbllength as double Dim pcurve as icurve Set Pcurve = [...
8
votes
1answer
2k views

Is there a way to automatically snap loose points of lines to close by vertices with Quantum GIS?

I have a vector layer of lines that were drawn with the snapping option off. I need to have them snapped but, there are hundreds of lines. Is there any solution to do this automatically or semi-...
11
votes
5answers
4k views

Measuring straightness of a curve segment (represented as a polyline)

I'm working on an automatic elevation contour labeling algorithm and one of the factors that I want to take into account when deciding the positions of labels is how "straight" a particular segment of ...
4
votes
2answers
7k views

Workflow for creating line features between two coordinate pairs in QGIS

I have a table of stream reaches with XY coordinates for their respective tops and bottoms. I'd like to convert the table to a feature, using the XY coordinates as the endpoints of the line. Any ...
3
votes
5answers
2k views

“XY to Line” not converting all 58,000 records

I have a dbf (and xls) that contains ~58,000 records of latitude and longitude for both start and end points. I would like to connect each XY coordinate pair using the XY to Line tool found inside the ...
5
votes
3answers
1k views

Does anyone know a function to determine if a Point lies on a polyline?

ArcEngine 10 .Net 4 c# I'm currently allowing user to select a point on a polyline and creating a point on the line. I am using snapping tool. I just want to make sure that when the user clicks on ...
4
votes
2answers
388 views

How to attribute lines with IDs of touching polygons?

I have two shapefiles: one contains streets of a city and one contains blocks (i.e. polygons bounded by the streets). I would like to have the streets attributed with the IDs of the left and right ...
4
votes
2answers
3k views

Merging two polylines with programming?

We are currently working on a project where we have to merge sections (polylines) to a route, but the big question is how to do this. We have currently tried adding those two as segmentcollections but ...