Dropped geometry_columns and geography_columns tables
Hiking & ActivitiesWhat is the difference between geography and geometry in PostgreSQL? Geometry, where it assumes all of your data lives on a Cartesian plane (like a map projection); Geography, where it assumes that your data is made up of points on the earth’s surface, as specified by latitudes and longitudes. What is geometric vs geographic data?
How to geotag photos from KML files
Hiking & ActivitiesHow do I geotag a photo from a GPX File? Quote from video: Right click and choose stacking. And expand all stacks I want to make sure that all the photos are visible. So when I do command a or ctrl a on a PC to select them all I'm selecting all the photos. How
What are units for calculated area in QGIS?
Hiking & ActivitiesWhat is the unit of area calculated in QGIS? If you open QGIS and go to Project Properties -> General you can set your units to return an linear and area measurements that you need for a project regardless of your data’s projection or CRS. In the First Example I have set my units for
Compiling a list of units that border each other
Hiking & ActivitiesHow do you add a border to a list in HTML? Using Inline Style attribute Add the border using inline property. What is the correct syntax for border properties? The border property is a shorthand property for: border-width. border-style (required)Definition and Usage. Default value: medium none color Inherited: no Animatable: yes, see individual properties. Read
Getting not NULL values from three columns in one column in QGIS
Hiking & ActivitiesHow do you check for NULL values in multiple columns? The syntaxes are as follows: Case 1: Use IFNULL() function. Case 2: Use coalesce() function. Case 3: Use CASE statement. Case 4: Use only IF(). Case 1: IFNULL() Case 2: Coalesce. Case 4: IF() How do I get rid of NULL values in Qgis?
ADC Maps Grid to Lat/Long Coords Conversion
Hiking & ActivitiesHow do you convert grid coordinates to latitude and longitude? World Map Conversion Divide the length of the x-axis by 180 and the y-axis by 90. This will give you the equivalent of each latitude (LA) and longitude (LO) angle in inches. Mark the coordinates of a location on the two axes. What are ADC