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This Video shows an overview of Remote Sensing Bathymetry. أكثر...

Hole-punch and canal clouds form when aircraft pass through altocumulus clouds that are rich with supercooled water droplets. أكثر...

Background: I have an Oracle package with procedures to randomize and reset passwords for our SDE/GIS schemas. These procedures work perfectly via SQL Plus command line commands. My package looks like this: create or replace package gis_pass_pkg as TYPE schema_name_var IS...

I am having problems creating a multilayer line symbol with this code : symbol = QgsLineSymbolV2.createSimple({}) symbol.deleteSymbolLayer(0) symbolLine = QgsSimpleLineSymbolLayerV2() symbol.appendSymbolLayer(symbolLine) symbolArrow = QgsMarkerSymbolV2.createSimple({})...

I have a raster file in .tif format and I want to convert it to .img with QGIS. Does anyone know how I could do that? أكثر...

I work for a company that is looking to buy all the civic address data for Canada. I've been Googling around and I have yet to find a solution that is not pay per request. We need it so that it can be integrated in to an ArcGIS server. Edit 1: What we want to do with the data is tie to...

This article http://gizmodo.com/heres-the-most-complete-ocean-floor-map-ever-made-1750109568 references an updated world ocean floor map. Where is it possible to obtain a raster layer to display in ArcMap? I tried going to ESRI and NASA to find one. أكثر...

I am trying to make a map that would show the total load of a bus. I have plotted the route and set up the time constraints. The ellipse is moving and seems to work fine, but when I try to style the ellipses based on the amount of load the marker-fill is completely removed. Has anyone had...

I would like to perform an analysis that is the inverse of Near_analysis for ArcGIS. Instead of my result being NEAR_DIST and NEAR_FID, I'd like each feature to have a FAR_DIST and FAR_FID populated with the furthest feature information from a 'far feature'. I can do this with some scripting...

In a town near where I live there is a public bus that runs a circuit about once an hour. I was asked if it would be easy to track the bus (presumably via an android device on the bus) and put the location on a website. The idea is that there would be a URL on a sticker at each bus stop so that...

This video provide a good introducing ArcGIS Pro. أكثر...

I have been working on creating a model in modelbuilder that will 1) take a specified DEM and split it into elevation masks at specified intervals (this step was done using a Python script tool), 2) iterate through the elevation masks and perform region groups, 3) convert the region group...

I have the following raster layer that has data gaps. I can use focal statistics to fill them: Con(IsNull("raster"), FocalStatistics("raster", NbrRectangle(5,5, "CELL"), "MEAN"), "raster")However, I want to use a zonal layer and limit the neighbors based on that layer so that the function only...

Back again with more questions. :) Data: Zipped ea.ml1 shapefile can be found here, and the country outline can be downloaded here at the GADM site. I've been using the Ethiopia ESRI shapefile. As per suggestions on a previous question of mine, I have decided to try to transform my ongoing...

The projection for my state according to my country's Mapping Agency is in a specific Lambert Conformal Conic (LCC) projection. They have given values for the following parameters: False Easting False Northing Central Meridian Standard Parallel 1 Standard Parallel 2 Scale factor Latitude of...

By Kacey Fitzpatrick Our EPA researchers were hard at work in 2015—so to highlight that effort, we’ve put together a list of the ten most popular blogs from this year. Happy New Year! Bridging the Gap: EPA’s Report on the Environment Read about EPA’s*Report on the Environment, an interactive...

WATFLOOD is an integrated set of computer programs to forecast flood flows for watershed having response times ranging from one hour to several weeks. Continuous simulation can be carried out by chaining up to 100 events. A shell program organizes all the menus used for data input and...

GHydraulics is a Quantum GIS plugin that allows to analyze water supply networks using EPANET. It also contains a function to calculate economic diameters based on given flowrates. The functions are accessible from the Quantum GIS plugin menu and toolbars. Download ...

Is there a way to use graduated symbols that display a value off the attribute table? For example, I have a map of Vermont towns, and I would like to have an industry code floating above each town (I am using a color gradient to show unemployment rate, so I need another method to compare...

QGIS 2.10 is supposed to be able to allow you to use size instead of color for a gradient method, as seen here: http://anitagraser.com/2015/06/21/qgis-2-10-symbology-feature-preview/. However, I get no such option. The "Method" drop down only contains color. Do I need to activate this option...