polygon

问题 I have asked about the same issue from here and here, but still can't get my problem solved. I think I need to bring the whole problem and ask for help, rather than breaking it down into small parts. I have a dataframe which I exported it to csv and can be found at http://pastebin.com/SNT9Ykt7. chart <- ggplot(data=map.shp,aes(x=long,y=lat)) ### PART1 START ### chart <- chart + geom_polygon(data=map.shp,aes(x=long,y=lat,group=id),colour=rgb(162,159,140,maxColorValue=255),fill=rgb(233,235,232

问题 I want to create a Pentagon, I succeeded in creating such pentagon. But my pentagon is not right, because it doesn't stand right on the surface. How can I fix it? I need an elegant answer not just a quick fix . Update: I would like to know also another thing : How can I draw a Pentagon using coordinates only, I mean the 5 coordinates of the pentagon? I want to draw a pentagon based on five known cordinates(v1,v2..v5) and without any loop,to draw some kind of path between five points. $

问题 I'm trying to come up with an algorithm to optimize the shape of a polygon (or multiple polygons) to maximize the value contained within that shape. I have data with 3 columns: X: the location on the x axis Y: the location on the y axis Value: Value of the block which can have positive and negative values. This data is from a regular grid so the spacing between each x and y value is consistent. I want to create a bounding polygon that maximizes the contained value with the added condition.

问题 I want to create a polygon using edge data (X,Y coordinates of each point of edge) that is unordered , and I want to fill that polygon with some color. Any suggestions how I can accomplish this? 回答1: If your polygon is convex, you can just compute the convex hull from the vertices using the function CONVHULL and plot the polygon using the plotting function PATCH. For example: x = [0 1 0 1]; %# Unordered x coordinates of vertices y = [0 1 1 0]; %# Corresponding y coordinates of vertices

问题 I'm creating a map using the maps library and ggplot's geom_polygon. I'd simply like to change the default blue, red, purple colour scheme to something else. I'm extremely new to ggplot so please forgive if I'm just not using the right data types. Here's what the data I'm using looks like: > head(m) region long lat group order subregion Group.1 debt.to.income.ratio.mean ratio total 17 alabama -87.46201 30.38968 1 1 <NA> alabama 12.4059 20.51282 39 18 alabama -87.48493 30.37249 1 2 <NA>

问题 I'm having two sets of polygon coordinates selected from leaflet geoJSON map. The parent and child coordinates are coordinates are: var parentCoordinates=[ [ 32.05898221582174, -28.31004731142091 ], [ 32.05898221582174, -28.308044824292978 ], [ 32.06134255975485, -28.308044824292978 ], [ 32.06134255975485, -28.31004731142091 ], [ 32.05898221582174, -28.31004731142091 ] ] var childCoordinates=[ [ 32.059904895722866, -28.30970726909422 ], [ 32.059904895722866, -28.308743809931784 ], [ 32

问题 I'm pretty new to Python so the answer to this question is probably quite simple, but I've looked everywhere and tried a lot but couldn't find the answer. Simplifying a polygon using Shapely may result in an empty polygon. I want to replace the polygon with a point if the polygon is empty. Something that would work like: if mypoly is empty: mypoly = [(0,0)] 回答1: Given that mypoly is a shapely polygon, you can check if it's empty using is_empty which is built in to Shapely to check for empty

问题 I'm struggling with detecting a tap on a GMSPolyline drawn on my Google map, it works just fine with GMSpolygones, but the same approach doesn't seem to work with polyline. My current approach, which works for polygones, is: if (GMSGeometryContainsLocation(coordinate, polygon.path!, false)) { ... } Any suggestions how to detect taps on a polyline? Or just close to it? 回答1: According to their API documentation, GMSPolyline inherits from GMSOverlay which means a GMSPolyline has the property

问题 Good afternoon, I am new to Canvas in HTML 5 and in using it with Javascript. But I can see how powerful this really is and I needed help. I have done a search and could not find a clear answer to this. Perhaps someone here can help. I have created a context on the Canvas with a background image in place. Now, I want crop or copy a part of that image which is contained in Polygon Data and place it else where on the screen. I know how to create the background image. I know how to create a

问题 I've got a question about libGDX collision detection. Because it's a rather specific question I have not found any good solution on the internet yet. So, I already created "humans" that consist of different body parts, each with rectangle-shaped collision detection. Now I want to implement weapons and skills, which for example look like this: Skill example image Problem Working with rectangles in collision detections would be really frustrating for players when there are skills like this: