0
votes
0answers
2 views

Writing shapefile with projection defined crashes Fiona part two

I have the same problem as this post. Writing shapefile with projection defined crashes fiona It says that was an issue with GDAL. I cleaned my site-packages of anything GDAL, fiona, six related. ...
0
votes
0answers
2 views

How can I render my own tiles using data I get with cartodb's core API library?

I am trying to use the cartodb.core.js library to render my own tiles. According to what I see, the Tiles library is only available in the cartodb.core.js. And if we use that we don't get the ...
0
votes
0answers
13 views

how to add different data frames in QGIS?

how can i add different data frames in QGIS and show all data frames in single map like we add different data frames in ARCGIS and in single map we show these data frames?
0
votes
0answers
3 views

Problems with layer-selector code on joomla article

I want to do something similar to this code. It works fine if I create a file html,paste the code into it a nd open the file with a browser but when I paste the code into my joomla article something ...
0
votes
0answers
4 views

Enable/Disable Parameters based on Boolean

I'm working in model builder and I have a boolean parameter that determines which of two processes run. Right now, all of the parameters for both processes show up when I run the model. Is there a ...
0
votes
1answer
11 views

Convert python from arcpy.da.SearchCursor to work in 10.0

I am using code such as for row in arcpy.da.SearchCursor(polyFC, ["SHAPE@"], spatial_reference=SR): # create inner buffer polyBuff = row[0].buffer(buffNum * -1) # create hull rectangle to ...
0
votes
0answers
6 views

Error Calculating Buffers with Fiona and Shapely

Below is some code that attempts to import a point shapefile, and build a buffer around each point that is large enough to capture the desired total area of analysis, that is within my study area. ...
0
votes
0answers
7 views

Get pixel values ascii 50 files

I´m working with photos from a cam. The cam is arranged to take ndvi values instead of RGB for each pixel. I have several folders with 50 pictures in each folder as '*.asc' files the pictures. I am ...
1
vote
1answer
14 views

Iterating an ArcGIS tool over multiple Fields with selection boxes

I have one shapefile that contains many fields and I'd like to write a simple script tool that allows me to run IDW for the fields I select. Is this possible? For example..... Input: 1 shapefile ...
1
vote
0answers
13 views

How to use Attribute Assistant in Canadian Municipal Data Model

Currently trying to use the attribute assistant that you download as part of the CMDM. I have the tables in my new geodatabase, but when I try to edit them I get an error about the Global ID, which ...
1
vote
1answer
18 views

What kind of coordinate uses this WMS? Also how to convert to lat/lon

On this map http://infomapa.rosario.gov.ar/emapa/mapa.htm which I believe is MapServer, I get some coordinates after inspecting with Chrome like this: "geoJson" : ...
1
vote
2answers
23 views

Does ArcGIS Pro join to excel worksheets like ArcMap does?

I love the idea of ArcGIS Pro, especially for non-GIS analysts to get one-off maps done easily and quickly. The big question is: Does ArcGIS Pro join to excel worksheets like ArcMap does?
1
vote
2answers
24 views

Finding a point inside a polygon based on maximum value of a specific field

I have a Polygon Shapefile that represents US counties and a Point Shapefile that represents hospitals. The hospital attributes table includes fields like "Number of Beds", "Number of Patients" and ...
1
vote
0answers
18 views

How to Make an Outside Buffer in QGIS?

I have a layer of street segments that are within a given distance of a fire station. Now I want to make a border around these street segments. If I use Buffer, it puts a buffer around each segment. ...
1
vote
1answer
30 views

Field Calcuator to add percent using Python

What might I go wrong here is that I am trying to add percent. I use the Field Calcualtor and it keeps getting an error. I am opening the Table to add a field named Percent and then type this: ...
1
vote
0answers
7 views

Animation in CartoDB

How do I prevent my animated in CartoDB map from starting over (looping)? I would like it to animate and end on the latest date.
2
votes
1answer
9 views

Manual (or examples) of r.ros, r.spreadpath and r.spread in GRASS

you can report me references or applications for use of the following modules (GRASS): - r.ros, - r.spreadpath, - r.spread. Thanks so much.
1
vote
0answers
14 views

Discover multipart features in a layer in QGIS

I am trying to identify multipart features using QGIS version is 1.8.0. I've tried: look at the attributes table select a random feature and check in the canvas if there are multiple geometries ...
0
votes
0answers
5 views

Restart plugin from PyQGIS

I'm writing a plugin for QGIS and inside the method def run(self), after the OK button of the plugin is clicked, i.e., inside # Run the dialog event loop result = self.dlg.exec_() # See if OK was ...
3
votes
1answer
16 views

Curvature computation for different scales

I would like to assess terrain curvature, i.e. the 2nd derivative of a DEM, on different scales. The most common approach to curvature seems to be the one suggested by Zevenberg (1987) where a ...
1
vote
0answers
5 views

Photogrametry using e-Foto (Stereo Plotter, Stereo Imagery)

I'm learning Photogrametry with Stereo-view using e-Foto (http://www.efoto.eng.uerj.br/en). At the end, I want to know how to do Photogrametry via Stereogrametry. I could replicate successfully ...
1
vote
1answer
14 views

IdentifyTask for “hollow” polygon (using ArcGIS API for JavaScript)

I have a web map application set up that's currently testing on a variety of Dynamic Map Service layer types, including points, lines, and polygons. This application includes a tool that makes use of ...
1
vote
0answers
9 views

customize the silverlight esri feature data grid form template?

I would like to add drop down box and multi-column text box to the feature data form which pops up when i click on the feature data grid. Instead of the regular text box i would like to replace some ...
0
votes
0answers
6 views

OpenLayers: showing polygon within donut hole

I Am using OpenLayers 2.13.1 to display Zip-areas. I have a postGIS database with multi-polygons, that I show on a map. The user can select / deselected them. Some polygons have an area (I think they ...
0
votes
0answers
6 views

OPenLayers z-Indexing Issue

I'm having a hard time figuring out how to order the stacking of 2 layers - here's a fiddle, where I try to put the polygon in the front to the back: http://jsfiddle.net/HD9yJ/6/ I've read several ...
0
votes
2answers
27 views

Export selected fields in ArcGIS to Excel using Python

I'm am creating a script that will allow a user to add XY coordinates to a point layer, then export (along with any addition user selected fields) to Excel. I am getting stuck on the iteration of the ...
0
votes
1answer
8 views

OpenLayers: programmatically fire ModifyFeature event

Does anyone know how to programmatically simulate a vector feature click that puts this feature from normal mode: to modifyfeature mode: I only have one feature inside the vectors layers and i ...
1
vote
0answers
10 views

QGIS 2.4.0 doesn't support multiple types of geometry in GML file

I'm testing GML 3.2.1 data according to INSPIRE Data specification (version 3.0). Data for theme Cadastral Parcels shall have both polygon geometry and definition point. When I download data from my ...
1
vote
2answers
26 views

Edit multiple vertices of different features simultaneously

I am using ArcGIS 10.2.2 and would like to edit multiple vertices of different features simultaneously. For example, I have a man hole with three laterals - is it possible to select all four features ...
0
votes
0answers
18 views

RMSE value in rectification [on hold]

Landsat satellite image having 3 RMSE would be conSider better than RMSE value 2 for IKONOS satellite image rectification ? means which one is better rectified with these RMSE value IKONOS or ...
1
vote
2answers
33 views

How to use an IF THEN statement in an sql Select expression?

I need to select the top 3 records from a table, but depending on an inline variable from an iteration, occasionally one of those top 3 records should not be selected and should be replaced by the top ...
1
vote
1answer
23 views

QGIS - Identify overlapping polygons in single layer

I have a shapefile of buffered points in QGIS. I need to display all buffer polygons in this layer which overlap. I have experimented with the intersect tool, but this only seems to work if I am ...
2
votes
0answers
10 views

Extract areas of multi-part polygons (SpatialPolygonsDataframe) R

I have a SpatialPolygonsDataframe with multiple polygons, some of these have multiple parts (blue shapes below). In GIS-land it would be easy to get the areas of the individual parts of a multi-part ...
0
votes
0answers
5 views

Show information I have in a php array in a CartoDB map

I have an array of names of countries that rapresents the best countries for the user of my web application. Now I want to show on my map of countries all the countries in the array in different ...
1
vote
0answers
4 views

PostGIS 1.5 libstdc++ error

After some package updates on my Debian machine all my database queries involving postgis functions or types are returning: Error message from server: ERROR: could not load library ...
1
vote
0answers
11 views

How to join the shape to an external data

I'm developing an application that uses Shapes only to draw the map. I would like to "Inject" the data at the time of viewing, since my data is dynamically changing. Anyone know of any way of doing ...
4
votes
4answers
197 views

What are good colour schemes for large density flow maps?

I came across nice QGIS tutorial for mapping flows. In contrast to Alasdair, I have zero talent in colour choice. Can anybody recommend some good starting points for nice colour schemes (I'd be ...
0
votes
0answers
5 views

Auto filling a form in arcpad

I am looking to figure out how to autofill a custom form at the click of a button. Basically i have a toolbar where if I click the button and a point on the map a form pops up and gives me a bunch of ...
1
vote
0answers
12 views

Attach attribute information to stream links

How can I attach related attribute information to individual segments of a stream?
0
votes
1answer
13 views

Openlayers 3 Vector Layer error

Getting error from Firebug on running this code: TypeError: f is null (ol.js 409) The map is showing up properly. After adding the line : this.map.addLayer(vectorLayer); I get the mentioned ...
0
votes
1answer
27 views

How to query all layers in ArcMap and get access to them by name or index?

I have next issue: I have ArcMap with tons of layers. Some of these layers may contain another layers with data (aka Composite layers) or they don't. The depth of composite layers in unknown. I need ...
0
votes
0answers
10 views

Postgresql to mbtiles

Someboby please help me with understanding of the following question. I have many postgreSQL databases with osm data on a server. Each of them contains the map of the certain country. I want to look ...
0
votes
0answers
8 views

Difference of Archydro and Hydrology Between [duplicate]

What are differences between archydro and hydrology tools? What does ArcHydro add on hydrology tools?
2
votes
0answers
17 views

Problems with the Iterate Feature Selection tool

I´ll try to work with the "Iterate feature selection" tool, but it seems like it doesn't work the way I want it to. I read all the help information about this tool, but maybe I understood something ...
0
votes
0answers
22 views

where is the sequence in Oracle associated with the Objectid field in ArcGIS?

I am working in ArcGIS with non-spatial oracle tables. These tables have an objectid because were created for inserting, updating records by using the Arcmap environment. However, my goal is being ...
1
vote
1answer
15 views

Gdalwarp with “out of globe” values in sinusoidal projection

I want to project a global image (source ERA INTERIM) from WGS 84 to sinusoidal, using gdal 1.11 and bilinear resampling. It work fine BUT I have values everywhere on the rectangular extent of the ...
0
votes
0answers
7 views

Drag and Drop in Openlayers

I have a number of vector layers, I want to be able to drag a feature off the map and drop it into a native application. Note, I do not want to move the features around, I already do that when in a ...
1
vote
0answers
7 views

Geoserver Image Mosaic Plugin - Index Table - ORACLE

On my current project we are using a Geoserver ImageMosaic to display aerial photography for England. We are also working to enable the TIME attribute on the layer so that we can display historic ...
0
votes
1answer
9 views

Geoprocessing tool Difference from the Terminal?

I have used QGIS Geoprocessing tool Difference to cut polylines (SHP) into to smaller pieces using a polygon (SHP). This works very good in QGIS. Now, to speed up the process, I'd like to be able to ...
0
votes
0answers
13 views

Adding a google Maps Layer to OpenLayers 2.14

I have a well-working map consisting of several layers in OpenLayers retrieved from geoserver. Now, I want to add a Layer from google maps. Since I did not find any working explaination in the web - ...

15 30 50 per page