-6
votes
1answer
30 views

how to obtain one polygon result of the space between many polygons? [on hold]

I have two layers: one from the street blocks and another from the city. I need to obtain another layer result of the space between the street blocks.(The streets)
1
vote
1answer
6 views

How do I correct the GeoTransform of a GRIB dataset if I scale/crop the data?

I have modified the GRIB2 data to be cropped and a different size. I'd like to create a new GRIB2 file which contains this modified dataset. How do I calculate the new GeoTransform and create it using ...
1
vote
0answers
8 views

geometric network connected links problem [on hold]

I am currently working on a geometric network representing the entire electric circuit of a town when I want to check sections (lines) that are connected to a source position (point: FLAG) I do not ...
1
vote
0answers
10 views

How to do a custom, ad hoc, affine transformation?

I have a data set of unknown origin (probably CAD) and I have determined that the correct transformation for this data into the projection that I want is as follows: (4x + 2205432), (30y + 1254781) ...
2
votes
0answers
18 views

Match polygons of two independently created shapefiles to create dataframe

I have two independently created shapefiles A) shapefile 1 lists the german postal codes and can be downloaded from ...
1
vote
0answers
17 views

Is it possible to share labels and have multiple leader lines for like features?

I have many labels in ArcMap and want to use one label with multiple leaders to call out features whose labels would end up being the same. Is this possible? As it is right now it is not possible ...
1
vote
1answer
14 views

Geoserver provide wms without authentication

I'm trying to understand how can add a layer from my geoserver without have to basic authenticate. The problem is when in QGis i try to add a wms layer and i put as URL as ...
0
votes
0answers
8 views

Feature Grid Creator what projection I should use?

My question is simple, I just want to know what projection I should use with the Feature Grid Creator? The plugin for QGIS
1
vote
3answers
20 views

Stacked label with parentheses and exclusion

I'm doing some labeling and have my labels stacked using python by using the following: [field1] + 'n\' + [field2]. But I'd like to keep the label stacked and add parentheses to [field2] as well as ...
1
vote
1answer
11 views

GeoServer - layer is read only (it already has a primary key)

I created a simple table in my Postgres\PostGIS DB. I then created the GeoServer layer with the SQL: select * from tablename I'm trying a WFS Transaction, like I usually do (and it works on similar ...
-1
votes
1answer
19 views

What tools are needed for building Web Based GIS Portal with Geoserver,PostgreSQL with PostGIS - ORDBMS, Heron js, GeoExt js, Ext JS and OpenLayers js [on hold]

I need build: Apache for Serving the apps Geoserver - for Publishing the GIS Maps existed in the office PostgreSQL with PostGIS - ORDBMS, Openlayers 3 - This is a Java Script Framework for ...
0
votes
0answers
17 views

How do I get all the labels to show when they have exactly the same grid reference using QGIS?

I map species records using QGIS 2.14.2. Many of the records have been submitted with exactly the same grid reference for different species. This can up to twenty records (labels). But QGIS will only ...
1
vote
1answer
13 views

Adding WMS layer with CQL filter

I would like to add to my leaflet's web map layer from my WMS service (Geoserver), but I need to use CQL filter in GetMap link: localhost/geoserver/my_location/wms?(...)&CQL_FILTER=[...] Is ...
1
vote
0answers
9 views

Map Series Extent with Rotation not working properly

In ArcGIS Pro I have enable map series with % extents and the map series work properly. Then when I try and rotate the layers or dataframe and refresh/re-enable map series the map extents no longer ...
0
votes
0answers
6 views

Which event is triggered when map.setCenter(lonlat,zoom) has been successfully completed?

I expected it to be zoomend, like map.events.register("zoomend", null, callback);, but that does not seem to work. Which is the right one (and how do I find out)?
1
vote
1answer
16 views

Where can I find tower information

I want to find geolocation with GSM Cell information. The device I have can be able to send this data to me. Anyway, I need tower information to find locations and calculate triangulation. I tried ...
0
votes
0answers
17 views

Exporting Raster from SAGA and importing it to QGIS - error CRS was unidentified

I make raster files from LiDAR las files in SAGA - CRS of .las is Slovenian national Grid. Then i export it as GeoTiff (Import/Export - GDAL/OGR - Export GeoTiff). When i import it into Qgis (Project ...
2
votes
0answers
9 views

Openlayers 3 different projection Geojson view

My map projection is EPSG:3857. And I want to show a GeoJSON data which has EPSG:4326 projection. var source = new ol.source.Vector({ url: ...
1
vote
0answers
14 views

WMS with additional parameter in GeoServer

In my database I have table which contains data for many users (identifying by USER_ID attribute) and I am looking for a way to filter data in my WMS service by this attribute. For example request as ...
2
votes
0answers
13 views

Using PostgreSQL stored procedure with GeoServer?

I was wondering if it is possible to call PostgreSQL stored functions from GeoServer? I tried to use GeoServer's WPS to do map algebra, but found that the operations it offered was somewhat limited ...
0
votes
0answers
16 views

Python module for counting ratios from SHP attributes

Using OGR, I am supposed to create a Python module that finds out which specific administrative region of a country has the highest density of roads. I have two input shapefiles: roads connected ...
0
votes
0answers
13 views

How to make marker visible in my android app

I used leaflet map in android to display a marker. When i run it individually the marker was coming nicely. I included the same code in my android then the marker was not coming. In the place of ...
6
votes
1answer
105 views

Setting a default value in a QGIS field

I would like to add in a layer's field a default value. I mean, every time a new feature is created, that field would be automatically filled with the default value. In my case the default value ...
0
votes
0answers
9 views

openlayers ol.proj.EPSG3857 doesnt exist (undefined)

i'm using Openlayers v3 in my mvc project in debugg enviromet i use ol-debug.js witch has a Property named EPSG3857 in ol.proj (ol.proj.EPSG3857) but when i use ol.js the ol.proj.EPSG3857 is ...
1
vote
1answer
17 views

Wrong calculation of line start and end XY coordinates of a merged line- how can I fix this?

I have a feature class containing several rivers, which are derived from merging individual river segments to make a continuous line. They have been merged using the editor tool. I have calculated ...
-4
votes
0answers
31 views

What is WFS and WMS in MapGuide Maestro? What it is used for? What are the things we can do with these in NewResources? [on hold]

What is WFS and WMS in MapGuide Maestro? What it is used for?What are the things we can do with these in NewResources?
0
votes
0answers
8 views

simplipy.py: AttributeError: 'QgsRasterLayer' object has no attribute 'selectedFeatureCount'

I am adding a raster in qgis 2.14.1 and get this new error: AttributeError: 'QgsRasterLayer' object has no attribute 'selectedFeatureCount' This is using menu only. I am not programming. I am using ...
2
votes
0answers
27 views

Get nearest polygons in both sides of a polyline with arcpy

I have polyline shapes representing roads and another shape layer with polygons that are representing buildings. I have to find some way with ArcPy to measure the distance from a point within the ...
0
votes
0answers
7 views

Menu layer in leaflet [on hold]

I want friendly easy to use layer menu with icons like in here GIS Map
1
vote
1answer
12 views

Are my reflectance values of bands in range and what does DRA in GIS 10.1 do to bands?

I have done the TOA correction to red and near infrared bands using raster calulator then after i calculated NDVI from lansat 8 image. but the NDVI range came as : upper range=184 and lower ...
1
vote
1answer
30 views

How to retrieve the processed file name, file path and save the result in a csv file using arcpy?

We have a list of feature-classes which are in multiple gdb's in multiple folders. This code is opening the csv and doing "GetCount_management" for the listed feature_classes alone and printing the ...
1
vote
0answers
17 views

refresh programmatically created composer

I am trying to create a composer using pyqgis. Everything works as expected. The only difference compared to the manual creation of a composer is, that I am not able to update the layers (by pressing ...
-4
votes
2answers
30 views

How to remove attribution in Leaflet

I want to remove the leaflet.com that appears on the right bottom of the screen here
-1
votes
0answers
7 views

Export attributing table values to XML? [on hold]

Can anybody help me how to export attribute table values to XML format?
0
votes
0answers
31 views

SRID and lat long values

I am using the following query to generate the lat long values SELECT NAME, ST_X(ST_Centroid(ST_Transform(geom, 4326))) as longitude, ST_Y(ST_Centroid(ST_Transform(geom, 4326)))as latitude from ...
0
votes
0answers
27 views

Free satellite images for academic purposes [duplicate]

Since the Landsat mission opened it's archive a lot of great scientific studies have been produced in the field of Remote Sensing. The Sentinel imagery from ESA is also thought to be open access ones ...
0
votes
0answers
1 view

Plotting a NetCDF with only 1 grid cell using Panoply

I have a .nc file with only 1 grid cell (1 latitude and 1 longitude). Whenever I try to plot it in panoply, of course, all the variable appear to be 1D. Is there a way to plot the point together with ...
0
votes
1answer
15 views

What is the difference $GPRMC and $GPRMCA?

What is the difference between $GPRMC and $GPRMCA strings? I can find online documentation about $GPRMC strings, however I have a device that sends $GPRMCA strings. ...
1
vote
1answer
36 views

Postgis spatial join performance (point on area)

I need to update a single attribute of a large table of point data with a result of a spatial join (point on area operation) on a polygon table. I'm using the below query but wondering if this is the ...
1
vote
0answers
10 views

How can I change the name of a coordinate system in SAFE FME?

Every time I use SAFE FME to write data in the coordinate system EPSG:25832 FME names it NUTM32. I them have problems reading the data in ArcGIS Desktop because it doesn´t recognise the name NUTM32. ...
2
votes
1answer
19 views

Imagery Band order for Natural and False color imagery

I have an image which has had its band ordering rearranged, giving it a weird false color. I wanted to change it back to a natural color, so I used GDAL and through trial and error got the bands ...
0
votes
1answer
20 views

How to convert a compound geometry (Oracle) to a geometry made of straight line segments only?

I have an Oracle Spatial table containing compound geometries (i.e. geometries containing both straight lines segments and arcs) that I want to project in another reference system. Using ...
0
votes
0answers
11 views

Linestring segment completition?

I just extracted some river paths from some old maps I acquired a few weeks ago, they seem accurate enough and will be very interesting to put against my theoretical mapping calculated by using the ...
1
vote
1answer
12 views

Checking if ModelBuilder model is in use by testing for Schema locks?

Is it possible to get ArcGIS to check if someone else is using a model by checking schema lock and potentially display an error saying that it is already in use and maybe provide information on who it ...
1
vote
0answers
22 views

ArcMap Layout Templates

I am designing a number of maps for a report and I was wondering is there a location where I can download different layout templates as the default ones in arcmap don't suit what I'm looking for?
0
votes
0answers
6 views

Converting classified raster *.tif file to Northwood Classified Grid Format *.grc

What is the reason why I'm getting the error message when converting classified raster *.tif file to Northwood Classified Grid Format *.grc. ****"ERROR 6: GDALDriver::Create() ... no create method ...
0
votes
0answers
10 views

Memory Leak when deleting a layer

I am working on a project based on qgis api c++ 2.8.2 and qt4.8 I have two methods in a class, the first create a layer and add a point Here is the code for the creating : LibCartoError ...
1
vote
0answers
14 views

Selecting cells with values from DEM those are above specific value corresponding to each polygon?

i have a shapefile with 2000 polygons and a DEM. i want to calculate zonal mean for each polygon considering values from DEM which are above a particular value for each polygon. i want to it with ...
1
vote
0answers
11 views

After Feature Layer reference is added all dojo references are not recognized

I'm creating a simple javascript management system in which I have to query 6 feature layer services, edit, add or delete data from the services. Every time I want to add the Feature Layer reference ...
-2
votes
1answer
19 views

“First” and “Last” from Global Forest Change [on hold]

What are the "first" and "last" rasters provided by the Global Forest Change data set?

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