I have two map shape files. One is a geographic projection of the regions of the UK containing 28 polygons. The other is a geometric projection showing the same 28 regions but as simple squares. Both are geojson files. Is it posible to create a transition between the two so that the shapes tween from one to the other?
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I am training some images using imageAI object detection. What i want to do is draw a polygon shaped data annotation around the objects in an image. Not a square box. Even though I ca draw the shape, the imageAI class doesn't consider polygon shapes. If some one can help me to find if is there is some model where polygon shapes are allowed in image training, that would be great.
ImageAI only supports PascalVOC image annotation format, which is upright rectangular bounding boxes. You would need to change frameworks for this to work. For a workaround, consider using an image editing tool to get rid of the background and then provide a square bounding box.
I'm trying to divide up a city map into polygon regions based on a list of single point coordinates.
The idea is that a polygon region would extend outwards from a single point in all directions until it bordered with polygon regions extending out from nearby / adjacent points. I don't want to use a fixed radius because I want the end result to be complete coverage of the map. So the regions will be irregularly shapes and sized, extending their "territory" as far as possible before bumping up against other territories or the map boundary.
Does anyone know of an algorithm, library or program that can generate such a list of polygons given a list of single point coordinates and a map boundary?
Perhaps you want delaunay-triangulation or a voronoi diagram.
Example page from JSTS
delaunay triangulation
voronoi diagram
I have already a 3D model for a planet and 4 pictures of front (0 degree), left (270), right (90) and back (180) side of the planet. Is there any known way to apply these 4 photos for texture of the 3D model?
I thought about combining these pictures into one like panoramic view and then apply it to the model. But that might be overkill. Maybe there is a way to apply 2D texture to the 2D view of 3D model like WYSWYG. Any hint would be appreciated.
Your best bet would be to combine the images into a single rectangular projection and then map that to the sphere using a spherical mapping.
Assuming your images are circular the first step is to create square images from those. A Mercator projection will probably work best.
Having independent multiple axes for each series in scientific graphs is very common condition.
The requirement is,
The graph can have more than one series. and each series is associated with separate Y axes and one X axis (Time).
E.g. Y1 axis shows temperature and Y2 axis shows pressure against Time on X axis.
Both axes may show different scales (range min - max) like temperature from 0 to 100 Degree kelvin & pressure from 300 to 900 kPa and accordingly the series will be plotted.
I am looking for open source control or freeware which can provide this feature.
I am trying to use WPF for plotting graphs and studying WPF Tookit & Dynamic Data Display for that.
Please look at FLOT example of multiple axes. I want this feature in WPF.
But I am not able to find feature of independent multiple axes in these controls.
Please help otherwise I have to drop the idea of using WPF.
Thanks in advance.
As far as Dynamic Data Display goes, I know that it is very possible to implement what you are looking for. You can always just make a new axis object and add it to the plotter's children. You can then interact and map each axis freely. The key to manipulation in D3 is the mapping, so if you have two different data sources, you can plot them on the same graph dependent on the axis that you map them to, and how you map them. Dynamic Data Display should fit your requirement.
Within a leaflet polygon object, there are two arrays "_originalPoints" and "_parts", I was wondering if anyone knew what the purpose of these two arrays were.
Thanks,
I'm Leaflet author.
_originalPoints is an array of projected geographical points (screen coordinates of the polygon points), and _parts is an array of arrays of points that eventually gets rendered after clipping and simplifying points. In case of polygon different "parts" are needed to render holes in polygons, and in case of polylines you often get several paths out of one after clipping (cutting points off a certain rectangular area for performance).