1
vote
1answer
37 views

Communicate relation between two table

At this time, I'm able to create a relation (1:M) between two table or geometries. After, I user Identify tool to exploit the relation. It is only possible to use this feature when your Identify tool ...
6
votes
3answers
1k views

Rendering and Labeling Shapefile with PyQGIS

I've been running into a few problems working with the QGIS API for python. I've gotten more comfortable working in the python console in QGIS but I run into problems when I try to run the code ...
1
vote
0answers
16 views

qgis python: select on screen and change (pre-set) properties accordingly

I have a map with different zones where I have drawn isochrones -where I will arrive within 15 min, within 30 min and so on. The picture attached shows the 15-120 min isochrones. This is set as a ...
1
vote
0answers
14 views

QGIS 2.10 Edit shape files saving only once

I'm have some trouble while editing my shape files. I can save only once. So what I have to do is to save as another file, add to QGIS and edit again. Save as another file... And on and on... Does ...
0
votes
2answers
182 views

geotiff conversion to coordinate system with gdal

I would like to get the coordinates X Y Z from a geotiff file. I am using the gdal translate for the conversion. Which output format is the more adequate for containing a 3 numpay array X Y Z ?
0
votes
0answers
18 views

Vector layer shifts over openlayer using QGIS 2.10.1

I have just created a new vector layer mapping features from the Bing Aerial Open Layer and at first they are aligned, but after a short while of working shift out of alignment. I use CRS OSGB 27700 ...
0
votes
1answer
9 views

How to convert floodplain inundation results from a Hec-Ras model into Google Earth?

Having run a Hec-Ras 4.1.0 model, I wish to show the results in Google Earth. How is this possible and is it possible to do this by using ArcMap 10.1?
4
votes
1answer
49 views

Free open satellite or other remote sensing data for night time?

I usually work with daytime satellite images to do some image classification (mostly Landsat data from the USGS EarthExplorer). Right now I'd like to check at some night time images to work on city ...
0
votes
1answer
23 views

reading GRASS vector map in python

I know similar questions have been asked several times, but none of the solutions seems suitable for my problem or don't work.. I computed flowlines using the r.flow tool from GRASS GIS, then I ...
2
votes
1answer
675 views

Looking for a pure Python method to convert Lat/Long To MGRS

Does anyone know of any packages out there that implement a pure python method to convert lat/long coordinates to MGRS coordinates? PyPi has a package, but it requires some c-extensions from ...
0
votes
1answer
206 views

How to solve sqlite_rtree_geometry_callback error?

I have just installed qgis 1.8 and it show error message the procedure entry point sqlite3_rtree_geometry_callback could not be located in the dynamic link library sqlite3.dll How to fix ...
1
vote
0answers
22 views

Deleting 'garbage' nodes after polygon dissolve

I work with QGIS 2.10.1 on Windows 7 (x64). I have dissolved polygons from an attribute value and the polygons geometries being not perfectly joined together, I get some 'garbage' nodes I need to ...
-1
votes
0answers
13 views

Worldwide Holidays in different Languages [on hold]

Might be slightly OT here but I'll give it a try since the topic is probably well known to many here: We're looking for a database or system to get current and upcoming holidays by location, ...
0
votes
0answers
6 views

How to determine the end of a route from data which come constantly

In data from 24h containing coordinates and timestamp I need to determinate short routes when device was moving in the destination point, coordinates can be near to each other but I can't find point ...
0
votes
0answers
21 views

Georeferencing CAD drawing with 1 control point

I am a newbie in AutoDesk AutoCAD 2015 and have a problem at hand. I have a drawing which has a known Universal Transvers Mercator based control point but for the drawing to be georeferenced in ...
1
vote
2answers
6k views

How Can I change the projection of shapefile in Qgis?

I have a probleme with Qgis. I would like to change the projection of my shapefile, it's about caves in my country. The default projection is set to EPSG:3003, I want to change it to wgs84 EPSG:32632. ...
0
votes
0answers
23 views

Why Cell towers need to have gps receiver? [on hold]

If the tower is stationary and it will remain to be, then why is there a gps receiver associated with the cell tower when its coordinates are not going to change ever, why not the location coordinates ...
1
vote
1answer
17 views

Pindrop or crosshair after address search in CartoDB?

The basic search box feature supplied by CartoDB centers the map on the result ... but for a user this may not be intuitive and furthermore, on maps with lots of data (like parcels) it might be ...
0
votes
1answer
24 views

CartoDB changing number formats in infowindows

I am trying to show percentage data in the hover infowindow function. The percentages are being reflected as decimals since that is how the data was uploaded. How can I tell CartoDB to multiple the ...
0
votes
1answer
221 views

How to submit data to modify feature using applyEdits of ArcGIS API for JavaScript?

I'm new to ArcGIS API. In a form, how can you submit data to modify a feature using applyEdits? No map is involved with this. I have a form that populates the editable data with javascript. When the ...
1
vote
2answers
83 views

Extracting all vertices from line shapefile in a simple way? (no python scripting)

I found that shpdump is a very good tool to extract all vertices from an ESRI polyline shapefile, but I need a single triplet (X,Y,Z) file (ie. shpdump provides all coordinates by parts). Is there a ...
3
votes
1answer
103 views

Way to find minimum value from a group of values - QGIS?

I'm wondering if there is a way to find the minimum value of a group within QGIS? Basically I need to find the minimum distance of each unique value in a table of about 5000 records. I can do the ...
1
vote
0answers
13 views

How to interpret svg:transform element

I'm rendering maps into SVG files, and I'd like to put geographic metadata into those files, as described in section 7.13 and 7.14 of the SVG spec, but I'm uncertain about how to interpret the ...
0
votes
0answers
9 views

Calculate maneuver details using coordinates

I want to calculate the maneuver details (turn-left, turn-right, etc) from the coordinates array returned by google roads API (I'm using JavaScript). I know maneuver details only returned by google ...
2
votes
3answers
66 views

Finiding Duplicate in buffer distance?

i am desperately looking for solution for one problem. i am having one Point Shape file, i need to check that if there is any duplicate point nearby(lets say 10 meter). i am not familiar with ...
4
votes
1answer
717 views

Trouble in adding a print function to GeoExt MapPanel

I am trying to add print function to my GeoExt 2 web application, like: http://geoext.github.com/geoext2/examples/printpreview/print-preview.html first I am testing this using the same example urls, ...
-2
votes
0answers
29 views

Global Imagery Services for commercial digitizing? [on hold]

Could you please share a a links to GIS-Imagery Services Providers? I look for "MapBox Satellite-like Service" but with a clear plan for use in desktop GIS (for digitizing) and with simple purchasing ...
0
votes
1answer
22 views

Selecting more graphics at once

I'm making a map on ArcMap and I converted the legend to graphics in order to manually manage my symbols and texts. For instance I want to increase the size of all the points in the legend to the same ...
0
votes
1answer
360 views

How to edit feature in sqlserver geodatabase

I am using arcmap 10.2.1 and arcobject 10.2.1,I just want to conncet to a geodatabase and edit,add,delete a feature from a feature class using arcobject,I tried to connect to database and it works ...
0
votes
0answers
16 views

Use postgis functions in restful web service java

I am trying to access Postgis functions in Restful web service JAVA. I am using netbeans 8.0.2, Glass Fish, J2EE 7 to create web service, PostGres 9.2 and postgis 2.1.1. Connection to postgres is ...
0
votes
1answer
14 views

aerosol optical depth

i want to extract aerosol optical depth on land using modis it seems like I need a value from one of these parameters between Corrected_Optical_Depth_Land and Corrected_Optical_Depth_Land_wav2pl but ...
7
votes
2answers
98 views

Bing Authorization interrupts arcpy script

I made this happy little arcpy script to fix some data source problems: print "Hi, I will fix find and replace file path sections on your behalf. \nGive me a moment to just count the number of MXDs ...
1
vote
2answers
24 views

Use gdalwarp to crop area with simple coordinate system

I'm new to GIS and trying to cut image with gdalwarp I need image projected like google map and I need to input coordinates of area of interest in latidute longitute system, like: from 45.3 10.2 to ...
1
vote
0answers
17 views

Downgrading WRF Hydro GIS Pre-Processing Tools 2.2 to work with ArcGIS Desktop 10.0?

I have just come across the WRF Hydro GIS Pre-Processing Tools for the first time. The version I am looking at is 2.2 and its documentation says: The processing workflow for creating WRF-Hydro ...
0
votes
1answer
154 views

.net arcobjects draw polygon(rectangle) can not start at the preferred location

I am using the sample code (draw a polygon on the screen) provided by Esri but it seems I cannot start the drawing from a location I want, every time it starts at wherever the function(or tool) ...
8
votes
2answers
7k views

R : convert a spatial polygon objet to spatial polygon data frame

My goal is to modify an existing shapefile by merging certain polygons. After importing the shapefile and using the UnionSpatialPolygons command, I get the polygon outline that I want. However, this ...
2
votes
3answers
401 views

Rasterize line shapefile

I'm trying to convert a line shapefile to a raster image at QGis, but my attempts have been unsuccessful. I've tried to use Raster/Conversion/Rasterize and SAGA/Grid - gridding/Shapes to grid, but to ...
0
votes
2answers
20 views

ArcCatalog crashes in customize mode

I have massive problems with my ArcGIS 10.3.1 installation since a week. My ArcMap crashes on start without any message. ArcCatalog crashes in opening the customize-dialog opening the tab commands. ...
2
votes
0answers
31 views

Merge Line Segments based on their length in QGIS

I have a layer containing line segments which are connected by their endpoints (e.g. as within a street network). I'd like to merge (union) polylines within this layer into one feature until following ...
1
vote
2answers
54 views

Fix Polygons to be true Rectangles

I got a featureclass polygon of 4 point polygons that delineate the coverage area of a georeferenced image; these polygons will later be map sheets. Anyway I discovered some of them are not true ...
0
votes
1answer
33 views

Points and polylines representation of coordinates in QGIS? [duplicate]

I am working on the "Jakarta Bay", Indonesia. I have a shapefile for the Indonesian coastline and I clipped my region of interest using an appropriate polygon. I also have points that are located ...
1
vote
1answer
299 views

Synergis Weboffice vs Geocortex Essentials

I have one simple question what are the main differences between Synergis Weboffice and Geocortex Essentials? I know they are both used for creating web-based mapping application for end users and ...
10
votes
8answers
8k views

How to georeference a vector layer with control points?

I have a non-georeferenced vector layer that I need to be georeferenced. With raster layers the task is easy and straightforward, but I have no idea what should I do with my vector layer. I have a few ...
2
votes
1answer
55 views

How to make Choropleth map using Openlayers 3?

I want to make Choropleth map in Openlayers 3 which is already implemented in Leaflet but not in Openlayers 3. how to integrate 'colorbrewer' in Openlayers 3? Give the working example of it.
3
votes
1answer
24 views

Problem exporting registers with the land registry in DXF continuation (suite) in reprojection

I visualize (display) a municipality with the plugin register with the land registry in spatiality and in projection Lambert 93. I need the bottom on Autocad in projection CC47 thus I re-throw ...
0
votes
1answer
186 views

Issue on Exporting Shapefile Points to Google Map Longitude & Latitude?

Using ArcGIS 10.2 and Some points in Shapefile with BC Albers Coordinate System I am having problem on Getting Points Longitude & Latitude in Google Map Coordinate System. What I have is a CSV ...
0
votes
1answer
9 views

Census Data Mapper - what tool they used to do it?

The Census Data Mapper is a web mapping application of the Census Bureau used to create instant web maps out of the Census data which are stored in the Census databases. I was wondering what tools ...
0
votes
1answer
24 views

Using Iterate Feature Selection export features to new feature class with unique names

I'm trying to use ModelBuilder in ArcMap 10.2 to select features from a large data set (>30,000 features) based on a value in the field "Route" and have those selected features export to a file ...
0
votes
1answer
224 views

What projection to use with Mapbox base/reference layers?

excuse me if this has been asked before, but I can not find answer after heavy googling. What coordinate system/projection does shapefiles need to be in to be alligned correctly with mapbox reference ...
1
vote
2answers
103 views

Importing text only out of string field to new field for labelling in ArcMap?

I want to import data out of a string field in my shapefile to a new field for labeling. The string field contains river names and codes and I just want to display the text i.e river names

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