on January 20, 2023
Is it possible to do scale dependent rendering in Google maps with KML?
Geographic Information SystemsCan you use a KML file in Google Maps? You can import map features like lines, shapes, and places to your map from KML files, spreadsheets and other files. Can you set Google Earth to a scale? You can turn on a dynamic scale legend to show in the bottom left of the main Google
on January 20, 2023
Perpendicular lines from point to another feature
Geographic Information SystemsHow do you construct a perpendicular from a point to another line? Quote from video: And what we want to do is line our ruler open. So we want to line our roller up so that it goes through the point where the ax cross our point and down to where the other two arcs
on January 20, 2023
How to edit the attribute tabel of a shapefile when the enable editing is greyed out?
Geographic Information SystemsWhy can’t I edit attribute table in ArcGIS? You cannot use ArcGIS to edit attribute values in tables in a database. Click the Editor menu on the Editor toolbar and click Start Editing. Right-click the table or layer in the table of contents and choose Open Attribute Table. Click the cell containing the attribute value
on January 20, 2023
How to enable pop-up window for more than 1000 features in ArcGIS Online
Geographic Information SystemsHow to configure popup in ArcGIS Online? Enable pop-ups on hosted tile layers without feature data Open the map in Map Viewer Classic, click Details, and click Contents. Browse to the sublayer of the hosted tile layer where you want to display attribute data, click More Options. , and click Enable Pop-up. Click Enable Pop-up.
on January 20, 2023
Calculating lat/long coordinates from DLS (Dominion Land Survey) Location
Geographic Information SystemsHow do you read DLS coordinates? Under the DLS, land is designated as being west of the 1st, 2nd, 3rd, 4th, 5th, and 6th Meridians (W1, W2, W3, W4, W5, and W6) or east of the 1st and 2nd Meridians (E1 and E2). Between meridians are six-mile-wide columns called Ranges. How do you find lat
on January 20, 2023
Data Driven Pages- Can i grey out non-zoomed to layers of each page?
Geographic Information SystemsHow to hide features in data driven pages so only the feature of interest is visible? How To: Hide features in Data Driven Pages so only the feature of interest is visible On the View menu, select Layout View. Turn on the Data Driven Pages toolbar if needed. Select the Enable Data Driven Pages option
on January 20, 2023
Finding list of points near current long/lat using PostGIS?
Geographic Information SystemsHow to find nearest location using latitude and longitude in postgresql? CREATE EXTENSION postgis; CREATE TABLE foo ( geog geography; ); CREATE INDEX ON foo USING gist(geog); INSERT INTO foo (geog) VALUES (ST_MakePoint(x,y)); Now when you need to query it, you can use KNN ( ) which will actually do this on an index. SELECT
on January 20, 2023
Where to download high resolution maps or layers for Greece?
Geographic Information SystemsWhere can I get high resolution maps? 1. Google Earth – Free access to high resolution imagery (satellite and aerial) Which map has the highest resolution? The Reference Elevation Model of Antarctica (REMA) map has a resolution more than 100 times sharper than previous representations. How do I download high resolution satellite images from Google
on January 20, 2023
How to convert QGIS 2.x composer templates to QGIS 3.x layouts templates?
Geographic Information SystemsHow do I import a template into QGIS? Quote from video: And i just drop it in like so close it close the layout manager go to project layout manager and open it again and you can see now if i go here my version 2 layout has been loaded. How do I create a
on January 20, 2023
Supervised classification with only one class with Google Earth Engine
Geographic Information SystemsHow do you do supervised classification in Google Earth Engine? Supervised Classification Collect training data. Instantiate a classifier. Train the classifier using the training data. Classify an image or feature collection. Estimate classification error with independent validation data. What is supervised classification in remote sensing? Supervised classification is the technique most often used for the