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I have a copy of some ArcGIS log files with bounding box extent information. This example point should map to Montana. Extent:-12711495.260857,6062474.786336,-12711267.136963,6062864.358207I know that the format is xMin, yMin, xMax, yMax for the points. I've taken the points to make a center...

I am trying to mange users for my ArcSDE database via SSMS as opposed to tools in ArcGIS, to do this i want to set up two new user roles, data-viewer and data-editor, and then assign users to those roles. However, while i have been able to create new roles and add users to those roles i can not...

I am using the torque library hosted here: https://github.com/CartoDB/torque I am using it in a viz.json-based visualization (so the torque layer is defined in the cartodb web console.) When I try to include a torque layer when I have imported JQuery, the visualization freezes with the...

I am attempting to 'capture' multiple polygons that are associated with points.In other words, I have points that reside within taxlots and I want to create a layer with the polygons that have the point data. I tried joinging and that did not work. I am also waiting the return of a worker with...

I have a polygon shape file containing polygons representing green spaces and a point shapefile of postcode centroides and am hoping to carry out closest facility analysis in arcmap to calculate the shortest distance from each postcode to a green space. However it doesn't seem that I can load...

I couldn't find a NTv2 file for transforming GCS NAD83 to GCS NAD83(CSRS) so I'm trying to create a custom transformation using the 'Create Custom Geographic Transformation' tool in ArcMap. The tool seems pretty straightforward but I don't know what transformation method I should use. I'm using...

Here's the facts: MapGuide for the longest time has an FDO provider that can read SQLite databases SQLite has an in-memory mode :memory: is a completely valid file name to pass to the connection parameters of a SQLite FDO connection In terms of I/O, memory is the fastest backing store you can...

Ordnance Survey has recently released a new range of Open Data products. This post will focus on how you can use the OS Open Rivers and OS Open Roads datasets. They provide detailed views of the watercourses and road network in Great Britain and are supplied for free as open data.Both datasets...

TweetGIS is all about the data, it always has been and I’ve been preaching that since 1999 I believe. ArcGIS Online is the platform, however, without rich, 3D data, what’s the point right? ArcGIS Online is the gateway that Esri wants you to use as your access point for feature rich, 3D, raster...

What are the requirements to set "Supports Advanced Queries" true on a Feature Layer I'm trying to use the ArcGIS query feature, OrderByFields, but I've read that for that feature to work the feature layer must show "Supports Advanced Queries: true". The layer we are hosting says that "Supports...

I am using shapefiles with basic information including the x-, y- and z-coordinates. I want to see how the objects (in this case points, which are finds from an excavation) are scattered along the z-axis. To make it visible, I copied the information to Excel and made a chart. There I can see the...

Is there a way to change symbology for multiple layers in ArcMap or ArcCatalog. I want to change the symbology of multiple layers at once. أكثر...

I need to convert distance from meters to units of EPSG 3857 in PostGIS. This is important for me to calculate a radius for ST_DWITHIN as I'm dealing with geometries. How can I do this? أكثر...

I have code that is taking a point dataset and converting into lines based on an ID similar to point to Line. It is also creating 32 new fields in the polyline that I want to populate from the the point data. Here is how my point data is structured I want the first point in the line, sorted...

What would be the best method for calculating a rough route cost(been some years since I have used Network Analysis in ArcGIS), alternatively would it be better using Google Map API and completing in Javascript..(I am okay with really rough cost) It could be freehand e.g...

This is meant as some kind of reference Q&A. Unless I am working with truly global data, I always prefer projected, local, metric coordinates so that calculations like area or distances are "right by default" in tools like QGIS. So if I get original data for a country in its UTM zone's...

Is there any way to define a field in open search to search for arbitrary doubles? Something like value > 1000.102? Or is there a way to emulate that? أكثر...

I try to find normalized icons to use for the BOYLAT ( lateral buoy ) I find description, but for the boylat it seems that different shape to show different buoylink for the description http://www.caris.com/s-57/object/boylat.htm and the link for the list of shape...

I would like to have the signal when the color of a vector layer is changed by the user. In the doc, there is a signal that seems to fit (http://qgis.org/api/classQgsVectorLayer.html#a403f235d3743aa59bb3aad69a72a5705) but nothing happens when it is called. I have a method called...

Allison Muise demonstrates the Community Planning application, which can be used by citizens and other interested parties to create, analyze, and share land use goals and aspirations for their community as part of the master planning process. أكثر...