1
vote
0answers
6 views

Merge a list of spatial polygon objects in R

I have a list of spatial buffers (30000 buffers) that I built with the function lapply: buff.pts <- lapply(1:nrow(pts.prj), FUN=function(l){ buff <- gBuffer(pts.prj[l,], width=1000) ## 1km ...
0
votes
0answers
4 views

OL3 client zoom functionality?

OpenLayers 2 offered a "client zoom" functionality by which a tiled source could be zoomed in client-side beyond the tile server supported resolutions: ...
2
votes
1answer
4 views

How do I get the bounds of a layerGroup in Leaflet?

I have added multiple geoJSON layers to my map by first adding them to a LayerGroup and then adding the layerGroup to the map. Now I want to call fitBounds on the map with the combined bounds of all ...
2
votes
1answer
8 views

Problem in ubuntu loading geoserver wms layer in local server with leaflet

I am just starting to work with geoserver. I am trying to do the same openlayers-geoserver example but using leaflet to view the map instead of openlayers: Publishing a shapefile This code is not ...
1
vote
0answers
4 views

D3: center a map feature using correct latitude and longitude, without rotation?

The following is a map of Chicago which I've created in D3.js, and the JS code to render it. I had a very hard time centering Chicago within my viewfinder (the white box). After much trial and ...
1
vote
0answers
9 views

Retrieve Google Maps API friendly latitudes and longitudes from shape file polygon

I have a shape file with a polygon in it, and I am trying to the latitudes and longitudes associated with it so I can use them with the Google Maps API. So far I have been working with QGIS Lyon and ...
1
vote
0answers
8 views

QGIS convert long integers stored as string to integer

I have long integers (11 characters) stored as text in a shapefile that I need to convert to integers, but when I attempt to convert them in the QGIS field calculator, I get the following error: Eval ...
1
vote
0answers
6 views

Using Midvatten plugin in QGIS?

After installation of the Midvatten plug in (QGIS 2.12 Lyon), i tried to get confidence with the plugin following the tutorial. When trying to plot stratygraphy data, a QGIS error shows up: "the ...
1
vote
0answers
7 views

How to update ArcGIS online metadata using the API?

I am trying to update metadata (XML file) for ArcGIS online items using the REST API but I am not quite sure how to do that. It says in the documentation that I should be able to change the metadata ...
2
votes
1answer
26 views

Creating a new Normal template in ArcCatalog?

I need to restore my ArcCatalog template to its original default. I am missing the main tab above the toolbar i.e. edit/file/customize etc...I am running ArcCatalog 10.3 on a Windows 10 operating ...
1
vote
0answers
13 views

Displaying Raster Source Information

I have a large number of raster files I'm working on. I need to figure out how each of the files was processed from. I have a composite land cover map and would like to view the file names and ...
1
vote
1answer
8 views

org2ogr PostgreSQL to GPX

I already have found how to import GPX files into PostgreSQL using gdal/org2org. Now I am wondering of dumping into GPX files the results of my modification on dataset stored into PostgreSQL. But I ...
0
votes
0answers
13 views

What is causing a “Failed to edit the selected object(s)” error?

I have a file named 'water use.lyr' which is a practical file accompanying by 'Getting started to ArcGIS' book (ESRI). When I want to open this file, I get 'Failed to edit the selected object(s)' ...
2
votes
0answers
13 views

Wrong shape display with North_Pole_Azimuthal_Equidistant projection

I need to create a map that displays the breeding and wintering ground of a bird species that has a circular arctic breeding distribution and winters in Africa. The map should lool pretty much like ...
1
vote
1answer
8 views

Calculate field based on user defined parameters in ModelBuilder?

I want to use ModelBuilder to dissolve polygons by a field whose values are concatenated strings based on 3 other fields. The general process is this: Add field, type string, called "concat". Field ...
1
vote
0answers
9 views

How to Avoid that Label Covers Icon?

I'm trying to render both house numbers and icons for sirens on a map in QGIS. Now I have added two layers with siren nodes and building outlines, the siren layer being above the buildings. In the ...
-1
votes
0answers
19 views

Learning GIS basics? [on hold]

I recently got to know about GIS. Can you tell me please what do I need to start learning GIS book references or any other reference. Also what do I need to have on my laptop for GIS (application or ...
-1
votes
0answers
26 views

Can QGIS 2.8 (Wien) export to Mapserver?

I've tried to export with RT Mapserver Export but it hasn't worked. I'm running >QGIS 2.8.6 on W7 x64. Sorry for my undocumented answer. So, first I install RT Mapserver Export plugin without ...
1
vote
0answers
7 views

How to use Leaflet's overlayadd event

In the example at http://jsfiddle.net/gwulo/w6cvagoL/4/ I'd like to force only one overlay to be visible. So if you select Cities2 in the layer switcher, the Cities1 overlay should be de-selected. ...
3
votes
1answer
20 views

Why this query on Oracle Spatial returns null? (Or how to retrieve WKB)

I am begginer on GIS, and I have loaded a shapefile to MSSQL, PostGIS and Oracle Spatial (11g) On both MSSQL and PostGIS I could create a query to return me the WKB from the table (geometry field) ...
5
votes
2answers
58 views

How to automatically sum up values within buffers?

I want to establish the population figures within multi-ring buffers around certain site. I have set up the buffers and am running a select by location query on each concentric ring. Once the ...
2
votes
0answers
18 views

Create polygon symbology from attribute?

I have shape file with polygons and lines. There are attributes for: layer, lineweight, colour: Red, colour: Green, colour: Blue. (colour values are from 0-255) Is there a way to read values from ...
1
vote
1answer
5 views

Set view doesnot work after Fitbounds

I have a map and a layergroup. var map = L.map('map').setView([27.6758,85.3313], 12); L.tileLayer('http://{s}.tile.cloudmade.com/8ae544230be74379927e6dee5d416398/997/256/{z}/{x}/{y}.png', ...
1
vote
1answer
6 views

Get the coordinates of the snapped and clicked point in ArcGIS Engine

I am developing an ArcGIS Engine program. I am using the code below to activate snapping to a layer programmatically. I want to get the coordinates of the snapped point (clicked point). I know I must ...
1
vote
0answers
13 views

How to point out a place in iframe using latitude and longitude

I want point out a place using latitude and longitude in following frame, <iframe width="75%" height="550" frameborder="0" scrolling="no" marginheight="0" ...
3
votes
0answers
16 views

Can I read ephemeris data from GPS receiver?

I want to filter the GPS data. when I use the low cost GPS receiver, it gives erroneous data. therefore I want to apply some filtering technique. How can I read ephemeris data from GPS receiver? I ...
4
votes
0answers
32 views

QGIS/OGR shp to tab export - crashing Mapinfo due to number format issues

I created a vector grid in QGIS and it exports as SHP -no issues. When I save as tab and try to open the file in MapInfo it crashes. According to ...
1
vote
0answers
12 views

ArcGIS - CTF and DAT files

How does one open CTF and DAT files as listed here using ArcGIS 10.3? I looked for instructions on their website but there isn't much guidance.
2
votes
1answer
22 views

Paste a feature from an existing shapefile into a row with null geometry in QGIS

If I have an existing row in my PostGIS database with NULL geometry, is it possible to select a feature from another layer in QGIS, and paste that into the empty geometry column for the PostGIS row?
1
vote
0answers
12 views

Can't display raster in mxd as RGB

I have a script that iterates through a folder of jpgs, clips them to a grid, inserts them to an mxd, and exports them. My original problem was when I added the clipped raster from a standalone script ...
2
votes
0answers
30 views

Is there something like postgis for mariaDB? [on hold]

Someone told me that PostGIS exists. Currently I'm storing latitude and longitude information un a MariaDB, but I want to know if there is something similar for MariaDB. Unfortunately, migrating to ...
2
votes
1answer
29 views

How to iterate through layers of an MXD?

I know model builder will not iterate through the layers in an MXD, which is kind of fundamentally stupid if you ask me, but I still need to do exactly that. I am not a strong coder but i understand ...
2
votes
0answers
8 views

Looking for a raster calculator C# class

I am developing an application using C# and dotspatial. I need to performs raster calculation a lot..I need a library which helps me to do it..Do you know any library for this purpose? The library ...
1
vote
0answers
10 views

Get dynamic params created from new ol.source.ImageWMS

According to this documentation of ol3 the params option of WIDTH, HEIGHT, BBOX and CRS (SRS for WMS version < 1.3.0) will be set dynamically. How can someone retrieve this information? Get for ...
1
vote
0answers
8 views

How to Sync an existing table in CartoDB

Two questions regarding synced tables. 1) What is the best way of Syncing an existing table? I have a data set (let's call this table web_survey_results) that is driving an external map ...
2
votes
1answer
30 views

Extract the edge between two raster cells with different values

Is there a way in R to create lines (black lines in the figure below) along the edge between two raster cells that have different values ? Update I'm trying the functions clump() and ...
1
vote
0answers
19 views

How to open a shapefile using ArgParse in Python? [duplicate]

I am trying to open a folder of shapefiles along with their associated files (i.e. '.prj, .cpg' etc) using Argparse in Python. I'm not sure if the code below is a good place to start: parser = ...
2
votes
1answer
10 views

Geoserver Mapfish printing

I am using mapfish module to print my map to pdf. It works well for two layers but if I add another layer there is no response from geoserver. Neither there is any error in geoserver log no in apache. ...
1
vote
1answer
9 views

Creating Mile Posts

I want to create mile post on a polyline. I'm getting confused on the LRS. Can someone assist me? I've tried going through the Linear Referencing Tools in ArcCatalog.
1
vote
0answers
11 views

WMS Layer Properties

I have created a gxp client where I have added some layer in the initial map settings and some layer can be added using gxp Add Layers plugin. When I add these layers to the map there is no issue with ...
2
votes
1answer
55 views

Strange names of swedish cities [duplicate]

I got a GIS Data-set for swedish cities. The problem is that they have strange names such as: Trädet Jäla Mjönäs Älmhult Did someone have the samoe problems? I think "ö" for instance mean ...
1
vote
1answer
25 views

QGIS: Buffer around external border of a country based on federal state borders

based on the question "QGIS: several layers - query" I have an additional question: With "join attributes by location" I got a layer that constist of the city names with the corresponding ferdale ...
2
votes
0answers
7 views

In a Geoserver Layer how do you make the color ramp smaller?

Is there a way to resize a color ramp decoration in a geoserver layer? As you can see in the WMS jpg request below the ramp overlaps my map. I know how to anchor and move the color ramp, but ...
1
vote
0answers
21 views

Measure Point Along a Line

Looking to find Distance along a line by a user input. Here is my code: def onMouseDownMap(self, x, y, Button, Shift): mxd = arcpy.mapping.Mapdocuument("CURRENT") df = ...
1
vote
0answers
10 views

Off-setting a single character in a text box

I am attempting to offset an ESRI character (the bird in the image) to be bottom-alignment with Location X. Is there any type of formatting tag that might allow me to shift the character upward? I ...
2
votes
1answer
27 views

Unexpected behaviour using ST_Equals() with QGIS

Let's say there is a table 'polygon_a' and a table 'polygon_b'. Each table contains three polygon features. The polygon features are spatially equal. CREATE TABLE polygon_a ( gid serial NOT NULL, ...
1
vote
2answers
37 views

How to add state polygon information to a city point?

I have the following layers: Country border federal state borders cities (located as points) I would need the following result file (txt or csv..): A column with the name of the city and another ...
2
votes
1answer
18 views

Doing spatial correlation between two layers on ArcGIS?

I have two datasets and I'm trying to determine the extent of their spatial relationship. I suspect they are closely related but I would like to produce a map output to illustrate this relationship. ...
1
vote
1answer
17 views

Using ESRI character font (“Environmental & Icons”) with formatting tag in layout text box

I am attempting to use a character from the ESRI Environmental & Icons font collection (A bird in particular). I went into my character map tool and found the one I want (symbol right ...
1
vote
0answers
12 views

ArcGIS - Location/format of inserted pictures

I have an old mxd that uses several hundred custom made picture marker symbols. We don't know where the image files that were inserted as pictures marker symbols are, or what format they were in. ...

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