An extent is the minimum bounding rectangle (xmin, ymin and xmax, ymax) defined by coordinate pairs of a data source. All coordinates for the data source fall within this boundary.

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12 views

NHD layers won't redraw in ArcGIS 10.1 at small scale?

If I am already zoomed in to a smaller scale and then add the NHD Hydrography dataset (already clipped to just Texas), I can see all the NHDFlowlines, NHDAreas, and other layers that come in the ...
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29 views

How to restrict panning in QGIS to a given extent

I'm going to build a QGIS standalone application. According to the requirements full extent equals to the extent of a predefined rectangle (say bounding box of a parcel). The application should start ...
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7 views

Feature Extend Zmin Zmax automatic calculate [closed]

I need to set Feature Z Extend z min = -100 000, z max = 100 000 values of many layers, I do not find opportunities it automatically, maybe thereby help?
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17 views

Properly setting Extents in Arcpy Using path

I am trying to set the extents of my processing using Arcpy, but when my processing is completed, there has been no change to the extents (it results in an extent that did not go as large as I ...
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23 views

XYZ bounding box of a spherical polygon

I'm looking for an algorithm to calculate the 3d bounding box of a spherical polygon - i.e. the min/max X, Y and Z over that part of the surface of a unit sphere. The purpose is to aid fast ...
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30 views

GeoDjango and bug with bounding box query

Just some context first, I have a postgres database with PostGIS extension, running under a GeoDjango wrapper. I have a weird bug that hopefully someone can shed some light on. I'm running a query ...
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47 views

Line features disappear when a particular area of the map is drawn

I've been creating line features in a polyline feature class and I just experienced a strange drawing error that I can't quite understand. Background: I have existing features in outside of the ...
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1answer
38 views

PostGIS 3D bounding box query that envolves all 3 axes (xyz)

I have some experience with PostgreSQL, but not with PostGIS, and for the life of me I can't make my bounding box take the Z axis into account. I have a points table with XYZ columns. I add another ...
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43 views

bounding box - generate coordinates

I will be using mongodb database which supports data on an Euclidean plane (not spherical). I will be performing queries which return all points within a box. For the box I need to specify the upper ...
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1answer
42 views

How to define map extents based on a feature's geometry?

There is a polygon geometry in my QGIS project which represents the extents of my map. Does anybody know how to use the data defined override to get the X/Y min and X/Y max coordinates of the polygon ...
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1answer
57 views

Generate polygons for each map extent in ArcGIS DDP layout

I have a set of maps I am creating with Data Driven Pages. Each map has a scale and rotation set by the feature class that is driving the map creation. I would like to create a polygon that is the ...
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64 views

OL3 bbox strategy on geoJSON vector layer?

I try to improve my current OL-3 webmap to load less payload using the bbox strategy. So I altered my code similar to the bbox examples out there: overlayGroup.getLayers().extend([ new ...
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1answer
19 views

Openlayers 3 containsExtent

According to the API: ol.extent.containsExtent(extent1, extent2) checks to see whether extent1 is contained by extent2. With the following variables: extent1 = [-93, 44, -94, 45]; extent2 = ...
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33 views

Clipping Feature Classes by Data View Extents with ArcPy?

Have a fully functional script about 90% of the time. It is that 10% that is really bothering me and I cannot seem to deduce a solution. Script will take the user defined dataframe view extents and ...
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40 views

Rectangular bounding box curved in D3.js

I am trying to project polygons to a map with a static background image using D3.js. The polygons looked slightly off in relation to the background so I drew the bounding box of the image, and sure ...
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1answer
62 views

Directly querying a raster

I've done tons of work within ArcGIS to analyze and process rasters. I'm pretty well knowledgeable on that subject. A question has come in from my coworker who is attempting to populate elevation data ...
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80 views

Efficient way of determining polygon intersection with bounding box

I have a set of polygons, and I need to check whether they are intersecting with a given bounding box(rectangle). What I am doing is, I am taking every vertex of polygon and checking whether it's ...
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2answers
48 views

Check shape orientation

I have a shapefile with many minimum bounding box (envelope) polygons and I need to find out, if the boxes are rather landscape or portrait format. (See pic below, one of the selected boxes should be ...
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3answers
38 views

Cropping a Shapefile into a Rectangular Box with Python pyshp

Using 'pyshp' I am hoping to reduce the set of US highway shapefiles to only those in Puerto Rico. The idea is very easy since I only need those pieces which fit into the window. >> import ...
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33 views

extend extent of geoJSON layer - Leaflet

I am zooming to the extent of a set of geoJSONs collected in a FeatureGroup with this call: map.fitBounds(myFeatureGroup.getBounds()); ...I would like to extend the extent a bit; as it is the ...
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52 views

In a GeoTiff, what unit are extents in?

I was looking at the GDAL metadata of a USGS GeoTiff quad (o48118e8) with the GdalToTilesWin program. It dumped the following info: Name o48118e8.tif Size X/Y 5315/6780 ResolutionX/Y 2.4384/2.4384 ...
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54 views

Is there any way to set a processing extent for QGIS:Voronoipolygon?

I was playing around with the QGIS:voronoipolygons command line function from QGIS and noticed that there was no option for setting the processing extent. This causes QGIS to pick the minimum extent ...
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83 views

Is there way to define processing extent in QGIS?

Is it possible to define the extent of a processing tool, like it is in the "Environments" in ArcGIS? For example "Same as Display, or "Same as Layer..".
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53 views

How to set extent and zoom level based on extent in openlayers?

I had a problem to set the extent and the zoomlevel in openlayers using GeoExt2. My problem is how do I know extent: [minx,miny,maxx,maxy] the minx,miny,max,maxy in openlayers ? So, I can set the ...
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36 views

Spherical Mercator - World bounds

What are the correct world bounds in the Spherical Mercator projection (EPSG:3857 and EPSG:900913) In some source I got those bounds see this link in the maxExtent parameter: minx: -20037508.3427892 ...
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2answers
48 views

Viewport bounds online update. OpenLayers

I am trying to extract the bound box coordinates of viewport (the box that is displayed). I want to know the coordinates all the time and updated when zoom in/out or dragged. I cheched that ...
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33 views

How to configure “Same as Display” as processing extent by default in ModelBuilder?

I'm working on a very simple model for creating a path from a selected point to the closest polyline, in this model I used a Cost Distance and Cost Path tool for creating the more feasible track ...
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20 views

How to force ArcGIS to re-read FGDB dataset extent? [duplicate]

I have feature class sitting in FGDB. I can add it to map, right click on it in the table of content and pick "Zoom To Layer". This is what I see: I start editing session, remove most of the ...
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43 views

Displaying symbology outside map canvas window extent?

Say we have equally distributed x,y mesh vector file. Each coordinate has a map-unit based diameter circle symbology. If we zoom into a region of the map canvas far enough, some centroids exist ...
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2answers
70 views

How to remove layers that are not in visible df extent

I am working on ArcMap 10.3 and I have a map with 50 layers in it. I am trying to check if layers are in a data frame. Unlike How to check if layers in a dataframe with Arcpy, I want to define the ...
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32 views

Openlayers bounding box dateline crossing

I got a map layer on which a bounding box is drawn. This is working quite well except when east < west which means the date line is crossed by the bounding box. In this case the box is drawn like ...
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1answer
43 views

Create Multiple Circle

I am trying to make many points in a map as a grid. The code makes what I expect but the time to load is quite long so I suppose that there should be other ways to be more efficient drawing many ...
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1answer
41 views

How to determine if a raster layer covers a polygon layer?

I have a raster and a polygon layer. In my application I always want the raster layer to cover all the polygon layer. How can that be determined? Is it possible to find out from boundary extent of ...
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1answer
47 views

gdal RasterizeLayer gives different extent to arcpy PolygonToRaster

I have an existing arcpy script which uses PolygonToRaster_conversion to convert a polygon shapefile to raster (tiff). I am now exploring GDAL/OGR and have used the cookbook approach to carry out the ...
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2answers
110 views

How to calculate a set of minimum bounding boxes for a polygon

I need to calculate a set of minimum bounding boxes for a polygon. Id est having a complex polygon I want to envelope it with a set of small boxes instead of a big one.
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1answer
61 views

Extent changing in ArcGIS Pro when shapefile added to map which only had basemap?

Using ArcGIS 10.3 for Desktop: In ArcMap: Open a Blank Map Add Basemap of Imagery (but any basemap will do) Zoom to Australia (but any area will do) Add the countries shapefile from Natural Earth ...
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1answer
185 views

Pythonic way to recalculate feature extent in ArcGIS 10.2

I am creating a tool that will automate a tedious process of data standardization. One of the steps is to recalculate the feature extent of a SDE file. Surprisingly I cannot find anything useful in ...
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1answer
111 views

ArcGIS Calculate Fields gives Warning 000405 No records within table?

Situation: I have feature layer sitting outside processing extent in Environment settings. If I open layer's table and use field calculator - Calculate Geometry on some numeric field: it works ...
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1answer
53 views

Can layers with different extents in arcmap 10 be made to line up?

I am currently trying to get some insect sampling coordinates that are represented by points to project on top of a polygon that shows all the different plots of land in a ranch. The coordinates for ...
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1answer
263 views

ol3 modify interaction customization

I'm trying to create a ol.interaction.Modify() to adjust a bounding box's edges and position. In OpenLayers 2 I used TransformFeature Control and There were options to configure the transformation. ...
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1answer
239 views

Openlayers 3 ol.extent to ol.geom.Polygon conversion

In openlayers 2 there was a method "toGeometry()" on Openlayers.Bounds() that could convert that bounds into a Geometry. I migrated from ol2 to ol3 and I try to find a solution to easily do the same ...
2
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0answers
55 views

OpenLayers 3 don't go beyond given coordinates

In Openlayers 3 Max Extent there is mentioned how to set a max extent. But how can I set coordinates in such a way that it is not possible to drag the map beyond the some given coordinates? Extent ...
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0answers
21 views

How to relate the zoom level with the real distance in the map?

Let's have this situation: in the frontend I have selected a zoom level in the map. Now, the application must invoke an external API method to search the available items in the current bounding box, ...
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2answers
101 views

Clip to Shape & Extent Indicators

I have a map showing the outline of an area which I'm using to clip other layers using the data frame > clip options. In addition, I have other data frames to show some detail and want to show the ...
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0answers
110 views

How to create function that gives google maps getBounds result?

I'm trying to create function that would calculate four bounding coordinates by latLng, zoom level, width and height in pixels, the same like in google maps getBounds function, in goal I won't create ...
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2answers
50 views

translate GRIB product on bounding box

I'm in troubles with the projection of a GRIB product. I have a Cloud mask image and I want georeferencing it with GDAL. I need to pass through gdal_translate before, since i need to fix the bounding ...
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1answer
86 views

Getting a WMS-like bounding box from WMTS services

I'm new to GIS and confused by all the systems that are used to request data. Every provider seems to use a different system. What I need is to request an area between coordinates (WGS-84) as a ...
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101 views

Output extent environment is not respected by Select Layer By Attribute (ArcGIS 10.2)

I cannot get the arcpy.env.extent working for Select Layer By Attribute GP tool. I can verify that I get various values for coordinates when I have panned to various areas on the map. Copy Features GP ...
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2answers
157 views

PostGIS SQL syntax for bounding box

I have the following query: SELECT row_to_json(fc) FROM ( SELECT ST_AsGeoJSON(lg.geometry)::json As geometry, ( select row_to_json(t) from ( ...
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1answer
51 views

Extent from Centroids, Projection, and Resolution?

I have a file that defines a raster, although all the metadata was lost. I know the lat/long coordinates of the grid centroids, and that the grid is in a Mercator projection with a 1/12deg equatorial ...