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My network is taking too long to complete a route. I continually get a completion time of about a month when in reality it should take about 6-8 hours to complete. I downlaoded a tiger/line shapefile for LA county. Set up the network dataset following the directions given in the tutorial. How do...

Does someone know how the cost field in PgRouting is calculated? What are 'source' and 'target' good for? 'osm_source_id' and 'osm_target_id' contain the same information using different numbers. Is there a good reason to use 'cost' and 'r_cost'? Every cost in my table is smaller than 1. So...

With the Geospatial Portal you can build 3D cities from your GIS data in seconds, perform shadow analysis, and take measurements directly in the portal. أكثر...

الجغرافيا السياسية هي علاقة تأثير وتأثر بين الجغرافيا والسياسة بصفة عامة، مثلا في مصر كان قرار إنشاء قناة السويس سياسياً ترتب عليه تغير في المكان وهو الجغرافيا. الجغرافيا السياسية هي العلم الذي يبحث في تأثير الجغرافيا على السياسة أي الطريقة التي تؤثر بها المساحة، والتضاريس والمناخ على أحوال...

Hi I have a Java Topology Suite QuadTree containing Points, now I'm trying to query the QuadTree with a polygon that contains a hole. Here's how I create the polygon. //Method will create a searchable Polygon in the shape of a donut.public Polygon searchAreaPoly(double outterBoundry, double...

<div dir="rtl" style="text-align: right;" trbidi="on"> الجغرافيا الطبيعية أو الفيزيوجغرافيا هو العلم الذي يدرس الظواهر الطبيعية على سطح الأرض من حيث توزيع اليابس والماء والتضاريس وأشكال السطح والغلاف الجوي والغلاف الحيوي مما لم يتدخل فيه الإنسان. يهدف علم الجغرافيا الطبيعية إلى فهم شكل الأرض...

الجغرافيا البشرية فرع من الجغرافيا يدرس النماذج والعمليات التي تصوغ تعامل البشر مع البيئة مع تركيز على أسباب ونتائج التوزع المكاني للنشاطات البشرية على سطح الأرض مجالات اهتمامها تهتم الجغرافيا الطبيعية بدراسة مظاهر البيئة المحيطة بالإنسان من تضاريس، ومناخ، وغطاء نباتي، وكذلك المسطحات المائية...

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I have a Openlayer map which should load on my page it has to show some POIs which it gets from a function. Now for me everything looks great, but when I try to load the page it does not show any map.I looked in the debugger of Firefox and it said, that there is a Reference Error on my function...

How would I calculate the percentage of streets that have sidewalks summarized by census tracts using PostGIS. My sidewalks file has an id that links it to its adjacent street and I've worked out how to select the street segment total grouped by tract, but I'm unsure of how to generate the...

Inegrateion of java with Qgis and its extensions?In case, If integration is possible can we use multi-threading qgis and java? أكثر...

الجغرافيا هو علم يدرس الأرض والظواهر الطبيعية والبشرية عليها، ويعود أصل الكلمة إلى اللغة الإغريقية، ترجمتها بالعربية "وصف الأرض". وقد كانت كذلك في بدايتها حيث كان الرحالة يصفون ويسجلون مشاهداتهم عن البلاد والأقاليم التي يزورونها. وكلمة الجغرافية في اللغة العربية تعتبر حديثة بعض الشئ، حيث كان...

Is there an update for the QMarxan plugin which at this stage only works on version 1.8.0. I did read on one forum that this was in the process of being developed. Any feedback much appreciated. أكثر...

I am missing a spectral profile in QGIS which enables me to see the values for all bands of a given pixel. (absolutely necessary for multispectral and multitemporal/time series work) It seems, there has been such a plug in called "earthbeat". http://hub.qgis.org/projects/earthbeat/wiki This is...

In OSM2PO, RoutingResultSegment has a getH() method - what values does it return? I was looking for a method that returns kmh, similarly to what is stored in the DB, but it doesn't seem like getH() returns that... أكثر...

I already tried to instal QGIS 2.8.3 using the procedure described on: http://www.qgis.org/it/site/forusers/alldownloads.html#debian-ubunt, but grass-plugin do not compare on plugin list !! I tried both repositories: ubuntugis or debian, but nothing !! I also cleaned the previous QGIS 2.6...

Regular cameras only give you part of the picture. Spectrolab and Boeing have developed 3D LiDAR cameras that use lasers to give robots, cars, and more, human-like vision. Find out more about all of Boeing’s latest innovations at http://www.boeing.com/innovation/inde…. أكثر...

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I have read that Geoserver fully supports WFS-Transactions. But for example here somebody also mentioned that shapefile-datastores would not be the best choice for using Transactions in Geoserver, and that it would be better to do the transactions in a database-store, such as PostGIS.Things may...

Hi I am new for open layers 3 with projection EPSG:4326 i am having trouble to get current scale of map i can get current resolution from view.getResolution() please give me solution as soon as possible... Thanks in Advance... أكثر...