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I've implemented a node-based A* search of a road network graph. I would like to penalize u-turns a places where bi-directional streets join together again, which I identify successfully via a match on turn angle and street name. Although I can add penalties to u-turns by duplicating nodes and...

I have created a SQL view from a large MultiPolygon table, and am attempting to serve it as a WFS layer via Geoserver. While testing the layer, I've noticed that some of the features are missing. This is evident when loading the WFS layer, or also doing a SQL query on the view for the missing...

I am trying to calculate the total area covered by c.a. 400 Circles of diameter 15Km. The centers of these circles are stored in a column of type geometry:4326 in my database. Some circles overlap, and I should not add to the total area the overlapping amount twice. Until now I tried the...

This question already has an answer here: Defining spatial operators (Equals, Disjoint, Touches, Within, Overlaps, Crosses, Intersects, Contains, Relate)? 2 answers In plain English what is the...

Is there a way to get the DE-9IM matrix between two geometries in a Spatialite function, analogous to the st_relate() function in PostGIS? (I find it very helpful to spatially join using intersect() and then do a count(*) group by with the DE-9IM matrix to determine what my interesections are...

I am using the JTS Topology Suite, and trying to write an expression that means "shape A and shape B are interior disjoint". I read this documentation page but I don't entirely understand the relations. The "disjoint" relation (which is the opposite of "intersects") means that the two shapes...

I am using the scale bar of the QGIS composer (ver 1.8) and I don't understand how the whole thing works. Where can I set the units properly? The layers have idential CRS (WGS84), the settings for map tools is in meters. I have tried to get it correctly by changing segment size and map units...

In Oracle Spatial, we are running checks on a graph. The Check should provide Nodes, which are marked as endnodes (Attribute "EDGEDEGREE" equals 1) but are in fact located somewhere along an edge. We are using Oracles Relate function to do this with the spatial relation pattern...

Consider this simple situation where three edges connect at a node: I’d like to write a succinct and clear description of the relationship between A and B in such a way that differentiates it from the relationship between A and C. Something like “when traversing the node in the clockwise...

Spatial databases, such as PostGIS, implement the DE-9IM model with function st_relate(),which returns a string with domain of {0,1,2,F}, meaning 0=point, 1=line, 2=area, and F="empty set"... See DE-9IM at Wikipedia. The DE-9IM codes are not understandable for programmers and mortal users,but...

I am trying to learn my colleagues to display measured data (ASCII) in maps relatively easily. I can prepare project, color and symbology style for the point layer and background map. I also found good way to get background map (PNG + world file) for offline use via MOBAC and OSM. MOBAC uses...

Has anyone else noticed that accessing elements from arcpy.mapping.ListLayoutElements() through a tool script takes longer than within ArcMap? Whether using a specific name, wildcard or nothing, the call takes on the order of 90 seconds or longer to return: arcpy.AddMessage(" Start: " +...

Imagine that I have the need to determine landlocked countries. Is there a way to do it automatically? Any known implementations? The target platform on this will be ArcGIS. أكثر...

Taking LiDAR Technology forward ,Jay Freeland, President, Faro أكثر...

Korea is managing the water pollutants in the national institute of environmental research part of the ministry of environment. The national institute of environmental research is managing which was classified pollution of domestic, industry, livestock, aquaculture industry, land, basic...

22 Waypoints autonomous navigation- 3D mapping ortho photogrammetry by Arducopter3.1 quad FAE drones أكثر...

Download from ArcGis online أكثر...

تجاوزت نسبة استخدام خرائط آبل Apple Maps مُنافستها خرائط جوجل Google Maps على أجهزة آيفون وآيباد حسبما أكّد تقرير صحيفة Boston Globe الأمريكية. وذكر التقرير أن خرائط آبل التي تتوفر بشكل افتراضي على أجهزة آبل الذكية تُستخدم ثلاث مرات أكثر من خرائط جوجل التي يحتاج المُستخدم إلى تحميلها من متجر...

موسوعة شاملة وكبيرة للخرائط المعمارية، بصيغه أوتوكاد وعلى هيئة صور أيضا الصور:تفاصيل معمارية، طرز معمارية، درابزينات، ابواب، واجهات، وديكورات والكثير غير دلك أنظر الصور المرفقة خرائط الأوتوكاد: تفاصيل معمارية، مباني، مساجد، فلل وغيرها و هو عمل مجاني، ومقدم لكل إخواننا المهتمين بالمجال للمهندس...

Purchase and Logistics Executive We are looking for some one who has at least 3 years work experience in the UAE working with vendors from China and Europe. They should have experience in both purchasing and logistics. The candidate should have prior experience in using an ERP and have eye for...