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I am novice in QGIS (QGIS 2.8.3, postgresql 9.4.5.)I need to update some filelds in the line layer. First I create the table and pop-up with some data. Then I must update some fields via spatial query. If i run this query: (SELECT owner_idFROM public.water_line, public.water_sistemWHERE...

I need to visualize PostGIS' polygons as GeoServer WMS with specific style such that the polygons' stroke have different color between inner and outerside of the polygon.According to this reference, a tag can be used. Below is the illustration from the reference. I tried to add that tag in...

I am using ArcGIS Server 10.1 on AMI instance. I have around 10/12 simple map services (Used query layer in all services) I want to check performance/time/statistics of map services in ArcGIS Server. So is their any tool to monitor ArcGIS Services ?? What I found so far : 1.According to...

I'm attempting to query a feature class for all features that meet a certain criterion (in this case, the Status field is NULL). However, I'm not getting very far into the attempted method before ArcMap crashes completely. I have no reasonable idea on how to trace errors that cause a program...

I'm not new to GIS, but just learning ArcGIS 10. I have been led to believe that the standard labeling engine doesn't allow any overlap: http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#/Positioning_labels_with_the_Standard_Label_Engine/00s800000020000000/ however, I am seeing...

I am new in R and I am facing a problem. I have a list with many SpatialPolygonsDataFrames. Some of them are like the example This is a SpatialPolygonsDataFrame. My "problem" is that the data.frame has two rows for this SpatialPolygonsDataFrame. How can I keep the two polygons with only one...

I have shapefiles from http://www.gadm.org/ with all the administrative areas at several levels for a specific country. I'd like to be able to get, in Python but not using GDAL or osgeo (I have not been able to install them), the name of the area in which a specific GPS point is contained at...

I want to create a diagram like this: This works pretty well, but now I want to do the same with varying input data. My plan to do this like in this minimal example: This works as well, but when I try to add the rule for the different colors into my text, it does not work to parse it to...

Can someone show me a very simple find and replace in field calculator for just one or two characters in a field based hyperlink? Thanks Dustin أكثر...

I've a postgresql table build from shapefile. In my phpfile I duplicate this table with a new name. Now I want to generate a wms with the content of the new table. The generation must be automatically in code of the phpfile not manually in GeoServer. Thanks,Elli أكثر...

1577 سؤال في الهندسة المدنية و المعمارية مرجع أخر يجيب عن أغلب الأسئلة التي تخطر للمهندس المعماري او المدني حيت يضم اجوبة في مجالات متعددة لمختلف الطرق و التقنيات حلول مشاكل معروفة و أيضا مجموعة من الإرشادات و النصائح. و قصد المساهمة في مساعدة الطلبة و المهنيين تم عبر دراسة إعداد مرجع لاجابات...

Estamos* trabajando en la estabilizaci أكثر...

Bonjour, Dans le cadre d'un projet professionnel avec GeoServer, il nous faudrait dimensionner les serveurs à mettre en place. Je ne trouve pas beaucoup d'information. J'aimerais savoir la charge d'un serveur, combien d'utilisateur peuvent faire de requêtes simultanées, combien de service...

Bonjour à tous, je cherche actuellement à récupérer dans un script shell des éléments (titre, résumé, etc.) contenus dans des fichiers XML de métadonnées au format ISO 19139. Pour info, les fichiers XML ont été créés soient avec GeoNetWork, soit avec le plugin QSphère de QGIS. Je...

I have a Raster file jp2, in the full zoom there is a strange black dots on the border of the raster, but keep zooming these dots disperses see images أكثر...

NASA World Wind has become a Honour Members of the gvSIG Association. The collaboration between the gvSIG and NASA World Wind projects started this year with the integration of both applications in gvSIG 2.2, that allowed to add the 3D … Continue reading → أكثر...

I have a feature class of ~1000 polygons and 10 tables with time-related information on those polygons (each ~3000 lines). So, I want 10 output feature classes. I used Make Query Table and tried to relate entries via expression field. That always results in an error though (see images below for...

I'm not able to run the following PyQGIS script in Windows (it worked perfectly in OS X): import sysimport osfrom qgis.core import *import qgis.utilsfrom qgis.analysis import *app = QgsApplication([],True,"")# supply path to where is your qgis...

NASA World Wind ha pasado a formar parte de los Socios de Honor de la Asociaci أكثر...

Mathematical functions in Arcmap's raster calculator - Derivatives & Complex numbers Is it possible to calculate derivatives and complex numbers on rasters inside the raster calculator in Arcmap ? If not, is there any walkaround ? Also, QGIS or any other opensource software can handle that ...