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In QGIS i would like to create symbology for points layer where the symbology will take into account more than one parameter (currently two).i.e.:My points layer has street names and house numbers and i would like to have each street with a different symbol and each number with a different...

I have a custom script tool in my toolbox in arcgis. I want to add it as a layer in table of contents so when the map is shared people can have access to it easily. When I drag a tool from catalog to contents, it gives error "Could not add specified data object to the map"If anyone can help...

i have a postgresql database which is refreshed all 10 minutes and i need to create graphs in pop-up with the data. When i click, a pop-up (or annotation ?) appears. How can i make it possible ? Thanking you in anticipation أكثر...

I have a shapefile of a boundary (polygon) that has the following projection: NAD_1927_UTM_Zone_11N Projection: Transverse_Mercator False_Easting: 500000.00000000 False_Northing: 0.00000000 Central_Meridian: -117.00000000 Scale_Factor: 0.99960000 Latitude_Of_Origin: 0.00000000...

We are currently running ArcGIS 10 in our company through Citrix as well as installs on user workstation. We always seem to have niggling problems with Citrix hence local installs. For example: Poor display of smoothed grids in Citrix showing very blurry but then perfect display when...

I tried to create a QgsRubberBand object with holes, but failed: rb = QgsRubberBand(iface.mapCanvas(),True)geom = QgsGeometry.fromWkt("POLYGON((0 0,4 0,4 3,0 3,0 0),(1 1,3 1,3 2,1 2,1 1))")rb.setToGeometry(geom,None) Looks like QgsRubberBand doesn't recognize holes at all.Is it a bug, or am...

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I know esri geocoding capabilities and features . recently i started to learn oracle 11g geocoding . I'm not expert in oracle 11g and not familiar with it's geocoding capabilities . I don't know the differences between the two geocoding (esri and oracle) or which one is better.The question is...

When you create your maps with the help of online services, sometimes you surely want not only to see your data on the map, but also to make at least some mathematical analysis. For example, to create a chart reflecting the change in the data and to estimate how much your data is correlated in...

Is it possible to automatically generate metadata for a given feature class? I'm thinking a table containing the names of all the fields, descriptions and data types. This could be quite useful for feature classes with a large amount of fields. أكثر...

My raster image has 10 bands (10 bands are 10 year), cell values of each one are 1, 2, 3. One is negative anomaly, 2 is no change area, 3 is positive anomaly. Now I want to find how many years out of 10 have the negative anomaly,how many years have positive anomaly etc. For example, the...

I would like to modify a raster (pixel values) in QGIS. The plugins "value tools" can easily provided me with the value of the pixel of my raster.However I know know how to modify it. I have found this tread saying it is possible to do it in Grass.threadI'v spent several hours on trying to...

When using the QGIS SpreadSheet Layers plugin, how do I update the SQLite query without closing and reopening QGIS? I cannot see a "watch file" equivalent. The plugin creates and uses a *.vrt file of the same name. This file lists each of the columns and has a separate SQL query for each...

Creating tables using the CartoDB SQL api is a known bug/missing feature, CREATE TABLE queries sent via the SQL API create shadow tables that never show up in the dashboard. One potential way around this is using the new imports api to post a small csv file in the desired schema to create a...

I need to develop a prototype of a web application that speaks : When you click on a city (point) it says the city name (Audio files are ready) I want to use ArcGIS Javascript API. do you have any idea how can I implement this idea ? أكثر...

In the past I've used PCI Geomatica to do something similar using the softwares classification functionality. Are there some tools/tricks in ArcGIS that will partially automate the process. I remember reading somewhere about rasterizing an orthophoto and assigning values to rooftops, which...

That could be my whole blog post. Just a PSA. Google Maps in Seoul is like Apple Maps was when they launched — dangerously inaccurate. *Apologies in advance — I don’t know what is helpful on iOS. I traveled last year with Android only, and my searches so far on iOS are coming up short.* So...

System details: PostgreSQL 9.3.5 64bit on Windows 7 Ultimate; PostGIS 2.1.3 Two days ago I re-organised my schema structure - effectively moving a series of tables of the form vm[X]YYYYMM.[tablename] (X أكثر...

My ERDAS 2013 does not have the advanced Image Objective Extension for feature extraction..I am using thus the tool Image Segmentation (Unsupervised -> Image Segmentation) to classify my RGB image ...when I try to use the Segmented Image as a base for classification ( the signature combined of...

Right now i am sharing a map service in ArcGIS by following these steps. File --> Share as --> Service --> then click on overwrite an existing service --> select appropriate map --> Click on Analyse --> Publish service. Is it possible to do all this task with a small python code...