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There's probably a simple answer to this, but... I'm trying to figure out how to use the WHERE function to display only polygons (NYC properties, I'm using the PLUTO land use database) where the height (numfloors) of the tallest building on the block (there's a block column with a unique...

I'm running PostgreSQL 9.4 and osm2pgsql 0.82.0 on Ubunt 14.04 (64bit). I'm new-ish to postgres and less new to OSM. My goal was to import the planet file. Unfortunately, when I started the import, I made the rookie mistake of not starting the osm2pgsql command from a sensible point in the...

Upon joining tables in QGIS (2.8.2) I am unable to view the join field in the resulting join. Additionally, the join field is not listed in the target table's Layer Properties, even though the other join table fields are listed there. I recognize that the target field is displayed, but there...

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*السلام عليكم و رحمة الله و بركاته** دورات متخصصة فى مجالات القياس و المعايرة للنصف الثانى من عام 2015 يسر مركز الخبرة الحديثة للتدريب و... أكثر...

I am trying to find mean coordinates of a shapefile to which I have joined a csv file for population attributes, but these will not show. I'm working with county data of each US state based on the year 1860. I have the shape file for the states which has polygons as counties. Its has own set of...

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One of the biggest advantages Google maps has over its competition is the accuracy of its real-time traffic information and it didn’t really come as a surprise when they acquired the Israeli startup Waze for around $1 Billion. Traffic data is incredibly valuable and is a critical input for any...

A satellite’s orbital geometry can affect what it sees. أكثر...

This video demonstrates the process of generating contours in ArcMap أكثر...

I was wondering how should one install QGIS after installing OpenGeo Suite on Ubuntu Linux? I installed OpenGeo 4.1 on Ubuntu 12.04 following the instructions on the official website http://suite.opengeo.org/4.1/installation/ubuntu/install.html, which involves adding the OpenGeo repository...

خرائط العمليات الملاحية الامريكية Operational Navigation Chart Series World 1:1,000,000 Scale حمل من هنا: http://www.lib.utexas.edu/maps/onc/

المؤتمر الدولي لنظم المعلومات الجغرافية والاستشعار عن بعد "GCT2015" ينظم هذا المؤتمر شركة " German GeoConsultants Group 3G" الالمانية بالتعاون مع المعهد الافريقي للتدريب في نظم المعلومات الجغرافية " AGSL" من الفترة 12-14 مايو 2015 بتونس. http://gct-tunisia.com/...

After having produced aspect of surface in GRASS GIS and being aware that GRASS GIS calculates aspect counterclockwise from east, how could we transform aspect from being a circular variable (0-360 degrees) into being a linear variable, so it can be used as explanatory variable in multiple...

I have options to use web app builder and web app builder developers edition to deswign to query task to find a house number. For example, I have got 4 villages and each villages have 10 streets. In my query, I want to select a village in the first pop-up window. The drop-down menu of the...

جيومكانى 2015 - المؤتمر الأول للتقنيات الجيومكانية يمثل مؤتمر جيومكانى 2015 تغطية شاملة لكل ما يتعلق بالتقنيات الجيومكانية من علوم الاستشعار من بعد و نظم المعلومات الجغرافية و المساحة التصويرية و الأرضية . وتتضمن أجندة مؤتمر جيومكانى 2015 أنشطة متعددة تتنوع ما بين عروض تقديمية ، وحلقات نقاش...

AutoCAD Map — the GIS answer, and Infrastructure Modeler — the Civil Infrastructure preliminary design. Join Warren Geissler as he demonstrates how to cross industry boundaries and use AutoCAD Map and Infrastructure Design to produce Internet maps. أكثر...

What is the equal of ArcGIS Raster calculator "Mod" function (Finds the remainder of the first raster when divided by the second raster on a cell-by-cell basis.) in r. mapcalc in GRASS GIS? أكثر...

Some maps work for me to load, while some of them never do.They do load the layer names, but nothing more.The javascript console in Chrome returns this: Uncaught TypeError: Cannot read property 'width' of undefined WebgisInit.js:450postLoading...

لو سمحتم محتاجة كتاب دراسات فى الجغرافيا الطبية ل د/ محمد مدحت جابر مناهج البحث واساليب التطبيق فى الجغرافيا الطبية د/ محمد نور الدين السبعاوى... أكثر...