Category: Geographic Information Systems

Wrong Calculated distance in PostGIS

How do I find the distance between two points in PostGIS? ST_Distance in PostGIS To construct a basic query in SQL to find the distance between two points, use the ST_Distance function. ST_Distance is flexible in that you can pass in geometry or geography type object (see here for more information on these object types). 

Convert ETRS89_Portugal_TM06 coordinate to Google Map Coordinate

How do I convert GPS coordinates to Google Maps? On your computer, open Google Maps. In the search box, enter your coordinates.Enter coordinates to find a place Decimal degrees (DD): 41.40338, 2.17403. Degrees, minutes, and seconds (DMS): 41°24’12.2″N 2°10’26.5″E. Degrees and decimal minutes (DMM): 41 24.2028, 2 10.4418. Are Google Maps coordinates WGS84? (Google uses

ArcMap creates unnecessary file types when saving shapefile (.cpg .prj, lock, etc.)

What is .CPG in shapefile? prj—The file that stores the coordinate system information; used by ArcGIS. . xml—Metadata for ArcGIS—stores information about the shapefile. . cpg—An optional file that can be used to specify the codepage for identifying the characterset to be used. How do I save a SHP in Arcmap? In the Saving Data

Adding XY Data to ArcMap?

Steps for adding x,y data as a layer Click File > Add Data > Add XY Data. Select the table that contains x,y coordinate data. Identify the columns that hold the x- and y-coordinates (and, optionally, the z-coordinate). Specify the coordinate system. How do you add XY coordinates to a shapefile? Right click on your

How to download old MrSID Files without Express View plugin

How do I view MrSID files? You can view MrSID files directly on the web by using GeoViewer Free viewer (formerly ExpressView Browser Plugin and MrSID Browser Plugin) you can download from Extensis. The plug-in lets you view, pan, zoom, save and print the photos in MrSID format. How do I open a .SID file

How to connect to (& edit) PostgreSQL database using ArcGIS Desktop without ArcSDE?

How do I connect to Internet? Turn on & connect Open your device’s Settings app. Tap Network & internet. Internet. Tap a listed network. Networks that require a password have a Lock . How do I connect to any Wi-Fi? Connect to Wi-Fi without a password on Android 10 and Newer Go to “Settings.” Select

QGIS Layer Style – Adding intensity/color if elements overlay

How do I add a layer styling in QGIS? Right-click on a vector layer and select Styles ► in the list in order to: see the styles currently applied to the layer. If you defined many styles for the layer, you can switch from one to another and your layer rendering will automatically be updated

How to identify parameters sent from ArcMap to geoprocessing service on ArcGIS Server?

Where does ArcGIS Server copy data to? The copied data is placed in a folder on one of the machines in the ArcGIS Server site. You publish feature data to an ArcGIS Server site that has a managed database configured. The data is copied into the managed database. What is the input of geoprocessing? A

Printing A3 format map

How do I print an A3 map? Print maps Select the Print tool from the top toolbar. Input a Map title (optional) Input your name (optional) Select PDF or JPG as format – note both formats look exactly the same. Select A4 or A3. Select Portrait or Landscape. Optional additions: Select Generate Print File. What

QGIS: Editing .qml files

How to use QML files in QGIS? QML files can only be applied to a layer once it has already added to QGIS. To use QML files you need to add the data layer first to QGIS then Load Style for the layer.  How do I open a QML file? QML files can be opened

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