Extracting the closest Point to a Line within a Polygon using ArcGIS for Desktop
Hiking & ActivitiesHow can I find closest point on a polygon from a point? The line segment corresponds to 0≤t≤1, so if t≤0, the closest point to (xp,yp) is (xA,yA); if t≥1 the closest point to (xp,yp) is (xB,yB); otherwise, the closest point to (xp,yp) is (x(t),y(t)). What is proximity analysis in ArcGIS? Proximity analysis is one
CartoDB SQL string as integer
Hiking & ActivitiesHow to convert string to int in SQL? SELECT CAST(‘789’ AS INT); SELECT CAST(CAST (‘12345.67’ AS NUMERIC) AS INT); SELECT CAST(CAST (‘12345.6789’ AS NUMERIC(19,4)) AS INT); SELECT CONVERT(INT, ‘123’); How to convert text to number in SQL? Related SQL Functions TO_NUMBER converts a string to a number of data type NUMERIC. TO_CHAR performs the reverse
Qgis convert string to date
Hiking & ActivitiesHow do I convert a string to a date? Convert a String to a datetime object using datetime.strptime() The datetime.strptime() method returns a datetime object that matches the date_string parsed by the format. Both arguments are required and must be strings. How do I convert a text field to a date field? Convert text dates
Comparing Heatmaps over time
Hiking & ActivitiesHow do you compare two heatmaps? A comparison of two heatmaps is essentially just a comparison of two histograms, or distributions. Thus an alternative to our visual approach is to use statistical tools that compute the difference between two distributions. How do you evaluate a heat map? How do I read a heatmap? You can
Adding coordinates to polygon layer to sort polygons from north to south in QGIS?
Hiking & ActivitiesHow do I add coordinates to a polygon in Qgis? Quote from video: Create a new field with decimal field type forex type in x centroid dollar sign geometry. And look for the brackets. And you can do it again for y. And that's it. How do I add a centroid in Qgis? From the