A vector data storage format for storing the location, shape, and attributes of geographic features. Often referred to as 'an ESRI shapefile', as ESRI developed it.

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70 views

How to join information from an excel table to a road feature in QGIS?

I'm working with GQIS 2.2.0 Valmiera. I've made a shapefile of a road that consists in a single line. Now I want to add information that I have in an excel table about several point in the road. How ...
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1answer
41 views

Trouble joining table in arcgis. Joining field is 'greyed out'

I'm trying to join a shape file with a excel file I converted into a CSV. I had done this before with the same shape file but with a different CSV but this time when I try to select the column it's ...
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0answers
57 views

Building a road path using openlayers and shapefiles? [closed]

I'm looking to learn OSM and Openlayers. From what I can tell, I need OpenLayers to display the map on a website and I need shapefiles to do any manipulation on the map regarding its topographical ...
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0answers
68 views

Converting a CSV to shapefile [duplicate]

I am attempting to load a CSV file into Qgis and ultimately convert it into a shapefile. I used Layer->Delimited Text Layer but the only options are for points, WKT and no-geometry. Neither of ...
2
votes
3answers
363 views

Workflow to convert a DWG CAD file to a shapefile

I'm trying to develop a workflow where I can convert a .dwg file to .shp. I don't have a good understanding of which tools I should be using. My preference is to use software that runs on OSX, is ...
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0answers
30 views

How to raster vector- and shape-files correctly

does anybody know how to convert vector- and shape-files correctly? Doesn't work with tab Raster/convert/vector to shape files. The output always contains strange input-data (wrong and strange ...
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2answers
405 views

Extract Raster from Raster using Polygon shapefile in R

I am new to R and using the raster package. I have a problem extracting polygons from an existing raster file. If I use extract(raster, poly_shape) function on the raster it always creates a list ...
4
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0answers
27 views

Projecting polygon when calculating its area? [duplicate]

I have a broad range of polygons (in vector format and in SpatialPolygonsDataFrame class), some going east-west, others going south-north, while even others span polar regions or very large ranges as ...
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39 views

Problem reducing the width of the attributes fields of a shapefile using python

I have a shapefile with rather long attribute widths (which is resulting in a rather large file). I am trying to trim it in python, here is my code: layer = qgis.utils.iface.activeLayer() ...
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1answer
45 views

why can't i export geometry data from a shapefile?

I saved the layer using "vector save as" box but even when adding GEOMETRY=AS_XY in the layer box, the csv only showed the id and no gemetry data.
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2answers
56 views

Clipping a raster file into the multiple shapefiles

I splitted the single shapefile into the multiple shape file based upon their attributes. Now I want to clip the raster file into the each splitted shape file. How can I do it at once? I am using a ...
2
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1answer
84 views

Compute the area of a given polygon (in vector format) lying between specified lines of latitude

I have species distributions (in vector format) and I would like to calculate how much of the area for a given species distribution is within certain lines of latitude, such as temperate and tropic ...
4
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2answers
121 views

Converting shapefile to raster: Character attributes

I've got a shapefile that I would like to convert into a raster, but the trick is that the attribute I want a raster version of is character data. I'm familiar with geoprocessing using GDAL (in the ...
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2answers
74 views

Creating outline shp - georeferencing existing map/pictures

So I need to create shapefiles (that need to be adapted and transfered for other programs) with the district outline of a couple of Caribbean countries. Is georeferencing (using the Georeferencing ...
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1answer
68 views

Select by attributes within the fiona Python module

Is it possible to select polygons from a shapefile based upon their attributes using the Fiona Python module? I can't seem to find anything in the docs, but it seems like a strange thing not to be ...
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2answers
68 views

Separating a shapefile into separate shapefile based upon their features using a python script [duplicate]

I have a shapefile of a US. I need to make an individual shapefile for all the states in the US using a python in ArcGIS. How can I do it?
1
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1answer
130 views

Problem opening shape file in qgis

I am having a problem opening a shape file using QGIS using 'add vector later'. This is the error message i am getting: /Users/Conrad/AmerindianLands 2/Amerindian_Land_Karasabai.shp is not a valid or ...
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votes
3answers
128 views

How to shrink polygon on two sides?

I have a polygon which I know is a rectangle, although it may be at any orientation: I want to shrink this polygon by a third of the width from two sides, so that I just get the strip in the middle ...
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1answer
67 views

Problems converting csv to shp in QGIS 2.01 on a Mac

When converting a csv to shp, I have been using the 'Add delimited text layer', and get one of two errors. With 'First record has field names' clicked, I am told that there is 'no data found in file'. ...
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1answer
51 views

How to solve an instalation problem requiring “liblwgeom” to work with “shp2pgsql”

I am trying to import shape file to postgis. I have problem configuring shp2pgsql. I am getting this error : dyld: Library not loaded: @loader_path/../lib/liblwgeom-2.1.1.dylib Referenced from: ...
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1answer
105 views

How to create polygons from a polyline graticule?

I'd like to make a polygon shapefile out of a polyline shapefile showing a graticule. However, using the "Line to Polygon" tool results in a peculiar...something: Other standard tools like ...
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1answer
96 views

How to compute and add the bounding box for every feature in a given geojson file

I have a geojson file. I need to find the bounding box of every feature in the geojson, then find the intersections between any two bounding boxes. I am using leaflet and Angular to display the ...
2
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0answers
51 views

PostGIS does not export shortest path to Shapefile

I am trying to draw a bunch of lines overlaying the globe map in a WGS84 projection. To this effect I have created a PostGIS DB with a table that has one column containing linestring data. My problem ...
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0answers
69 views

Why does the QgsVectorFileWriter have probelms creating vector files? [closed]

I am using QGis 2.0.1 and have tried to create a new GIS feature file (SQLite, Spatialite, and Shapefile) of a subset of the data. I am then saving a copy of the style of this layer and applying it to ...
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0answers
51 views

Global height data as polygons — Natural Earth doesn't have it?

I love the bathymetry data from Natural Earth. I've been looking for the last few days for the same basic data but for land. I'm trying to find general elevation shapefiles, as polygons. I don't need ...
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14 views

Qgis2.0.1 Zoom Problems

I'm working with project with EPSG:20790 in both basemap and SHP. i'm making a road in the middle of a farm between areas of vines, because of the precision that i want to have i'm working with some ...
2
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2answers
204 views

How to convert a shapefile to a grid file

I was wondering whether anyone might be able to tell me in layman's terms how to convert a polygon layer to a Grid file in ArcGIS 10.1 or ArcGIS 10.2?
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38 views

Why can't I save a line shapefile?

I'm working with qgis v. 2.0.1. I have some data points and I just wanted to create a new shapefile with line geometry. In the new vectorlayer-window, I added some attributes (approx. 10) and klicked ...
3
votes
1answer
185 views

Shapefile to table within python

I was just curious as to whats the best way within a python script to get the output a dbf file/ table while the input is a shapefile. (if possible which i'm assuming it is) Is there a way of ...
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0answers
17 views

converting from JSON to Shape files [duplicate]

I have a quick question about converting JSON to Shapefile. I'm trying to convert multiple polygon geometry JSON files into a single shape file and I'm not sure what kind of json this is ?[I'm ...
0
votes
1answer
74 views

Why is shapefile layer not visible on WMS layer in QGIS?

In my QGIS project I have added a WMS layer for which the CRS is WGS84 EPSG:4326. Now I want to show my shapefile layer which has the same CRS. QGIS shows the layer separately but does not show with ...
3
votes
2answers
35 views

How to control how points are displayed across different programs

I'm completely new to GIS, but I'm trying to control how Points are displayed (shape, color, size, etc) across different programs (ArcGis, qGis, etc). Is there a way to control the rendering of ...
1
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1answer
75 views

Update postgres/postgis point data attribute from another enclosed polygon shapefile in QGIS

I have a placename point table in postgis with 'district' column. a districts polygon shapefile with district name in 'Name' column. See the image below. I would like to update the 'district' ...
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0answers
17 views

Issue on Sliced SVG from Shapefile - ArcMap

Using ArcMap 10.2 I have a shapefile of Bc, Canada (polygon) in UTM zone 10. The shapefile is ok in ArcMap and I can change the it's style but when I export the map to SVG and I open it in Adobe ...
0
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1answer
50 views

Selection/Deletion of all smaller polygon/s in a SHP - Python solution?

ArcMap 10.2 user, with Spatial Analyst only. No ArcServer or of sort. I have abt 500+ polygon shapefiles, each containing 2 or more polygons. All of them has a NAME column and the rest of the ...
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0answers
50 views

Simplifying TopoJSON causes leak of Natural Earth in d3

I'm working with topoJSON and D3 to display Natural Earth data on a globe. Obviously, we need to simplify our geometries while still keeping borders consistent. We've created a script as based on ...
0
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0answers
16 views

Visualization of poin.shp in QGIS 2.0 with manually selected min max values

I would like to visualize a poin.shp file in QGIS 2.0 with manually selected min max boundaries. The data consists of many different points lined up as a line. The aim is to visualize the different ...
0
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0answers
69 views

Extract Polygon Data for Each Neighborhood from GIS Shape File

I have a dataset that has four types of files with the following file extensions - .DBF,.PRJ,SHP,SHX My goal is to get all the polygon coordinates for each neighborhood and draw the boundary outline ...
0
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2answers
48 views

Is there any way to use open source tools to make sure that lines on a map dont overlap?

I am a generalist developer getting the hang of basic gis. I made this geojson map by clipping and converting different shapefiles. The problem is that the precincts of New Orleans extend into the ...
4
votes
1answer
259 views

How to merge shape files with attributes from a python script in QGIS?

I have some shape files. They are all the same kind of shape and all have the same attributes. If I wanted to merge them manually the "Vector/Data management tools/merge shape files to one" works ...
0
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0answers
115 views

Problem in Exporting Vector shapefile to ROI(Region Of Interest) in ENVI-4.7

I working in ENVI image processing software. I want to export shape file to ROI in order to create subset of the image .For This first I loaded shapefile converted that into .evf format .While ...
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votes
1answer
112 views

How to parse data from KML to shapefile with ArcGIS ModelBuilder?

In ModelBuilder of ArcGIS 10.2 does there exist a method or routine for parsing data from a KML file and "print" this data in a shapefile or convert this data a to shapefile?
4
votes
3answers
87 views

Preparations for a transition to ArcSDE [closed]

So I'm a GIS Intern for a city government, we are preparing to purchase ArcSDE and implement it to our current GIS setup. I'm curious as to what should be done before it is purchased. Our GIS consists ...
0
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0answers
34 views

Android app where i can import image and set waypoints by GPS

Hello i'm looking for an application for android where I can upload a large image raster and apply for it `these GPS waypoints. We would like to count the trees in the area, we have the exact raster ...
2
votes
3answers
128 views

ShapeFile to GeoJson conversion

I am working with OpenLayers. I want to convert ShapeFile into GeoJson format and send it to browser to show with OpenLayers. But problem is when the size of my shape file is so big like 60MB or ...
0
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0answers
30 views

GPS Coordinate Handling

I have a text file with consecutive coordinates of gps data for ongoing and incoming route(on Same road). i want to convert them in line format. how can i normalise those extra coordinate so that i ...
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0answers
108 views

QGIS/MATLAB add geo-coordinates flag

I've created some polygons in QGIS with which I'd like to create some thematic maps. Unfortunately, if I want to import the shapefile in MATLAB with: shaperead('nameoffile, 'UseGeoCoords') i get an ...
0
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1answer
107 views

geopandas error when writing to_file() “ValueError: 'long' is not in list”

I'm having a problem getting the "to_file()" function to work with geopandas import geopandas as gpd f = gpd.read_file('fin.shp') f.to_file('fout.shp') Error Output: ...
1
vote
1answer
66 views

QGIS combine Vectorlayer and Rasterlayer to one shapefile

I have to create some Thematic Maps, especially Choropleth Maps on Matlab. Therefore i've found a shapefile which I can use, but need to draw some lines there. I've imported my shapefile as a Vector ...
2
votes
1answer
162 views

Converting JSON/GeoJSON files to Shapefiles

I have a quick question please about converting JSON/GeoJSON files. I'm trying to convert some JSON files into something I know how to work with (shapefile, R objects or PostGIS). I'm afraid I have ...