No simple feature geometries present: returning a data.frame or tbl_df problem with a table Asked 2 years, 10 months ago Modified 1 year, 7 months ago Viewed 1k times
I'm trying to write a simple geometry shader what just passes through vertices before attempting to modify stuff. My vertex shader is #version 150 core in vec3 inPosition; in vec4 inColor; out v...
It wouldn't. ST_IsValid() checks that the geometry conforms to the definition of the type that is specified, for instance, the boundary of a polygon can't cross through itself as seen in the example in the docs. I'm looking to check that the geometry in the table is ST_Polygon and not ST_Linestring
1 I use simple geometry: Vectors and/or Trigonometry At each corner find the mid vector, and mid angle. Mid vector is the arithmetic average of the two unit vectors defined by the edges of the corner. Mid Angle is the half of the angle defined by the edges.
I have this project where I need (on iOS) to detect simple geometric shapes inside an image. After searching the internet I have concluded that the best tool for this is OpenCV.
38 I would like to generate a numpy array of 200x200 elements in size and put into it a circle centered into 100,100 coordinates, radius 80 and stroke width of 3 pixels. How to do this in python 2.7 without involving file operations? Possibly using geometry or imaging libraries to allow generalisation to other shapes.
If i have a logo, let's say done as a jpg or even a png. Any suggestion for how I can use that to define a path geometry? It would be really good if any suggestions could be provided for how i can...
