point

I am confused to as why the Java Point class takes in two int paramaters and the getX() and getY() methods return doubles. For example I could define a Point Point p = new Point(4,6); If I were to call.. p.getX(); It would return 4.0. and if I were to call p.x; I would get 4. Any reason for this? There are Point2D.Double and Point2D.Float classes that extend Point2D which is a superclass of Point and they need to be able to work with floating point values. Note that there is also a setLocation( double, double ) . Point2D is an abstract class that implements the distance calculation for points,

I have a problem with the number input on a form. When I enter a number, say 88.2 and submit it, there are no problems. But when this other person does the same, you can see in the php code if you echo the variable from the number input, that it has removed the decimal point ( . ). It does not remove his decimal point when he uses a comma however, when I use a comma it removes that for me. Is there any way to fix this and make it only accept "." as decimal point? Here's the input: <input id="version" name="version" step="0.1" min="1.0" max="250.0" type="number" class="input-small" placeholder=

I have a map with a lot of polygons and a point inside in one of them, like this: The x and y coordinates of the edges of the polygons are save in a database like this(for example): Polygon(Point(11824, 10756), Point(11822, 10618), Point(11912, 10517), Point(12060, 10529), Point(12158, 10604), Point(12133, 10713), Point(12027, 10812), Point(11902, 10902)), Polygon(Point(11077, 13610), Point(10949, 13642), Point(10828, 13584), Point(10772, 13480), Point(10756, 13353), Point(10849, 13256), Point(10976, 13224), Point(11103, 13294), Point(11171, 13414), Point(11135, 13558)), Polygon(Point(11051

I have a 3D plot and two points coordinates A(0,0,0) and B(13,-11,19). I just want to plot a visible line connecting this two points ... I tried plot3(0,0,0, 13,-11,19) and other stuff but everything i tried failed miserably. Here's how: % Your two points P1 = [0,0,0]; P2 = [13,-11,19]; % Their vertial concatenation is what you want pts = [P1; P2]; % Because that's what line() wants to see line(pts(:,1), pts(:,2), pts(:,3)) % Alternatively, you could use plot3: plot3(pts(:,1), pts(:,2), pts(:,3)) Admittedly, this might seem a bit counter-intuitive at first, but in the long run it'll make sense

Problem: The radius parameter in the function contains_point in matplotlib.path is defined inconsistently. This function checks if a specified point is inside or outside of a closed path. The radius parameter is used to make the path a little bit smaller/larger (dependent on the sign of radius). In this way, points can be taken into/out of account, which are close to the path. The problem is, that the sign of radius depends on the orientation of the path (clockwise or counterclockwise). The inconsistency (in my opinion) is there, because the orientation of path is ignored when checking if a

I have some polygons indexed in Solr. Is it possible to query with a point(lat,lon) and see which polygon has that point inside? user2894821 Yes it is possible and described here: http://wiki.apache.org/solr/SolrAdaptersForLuceneSpatial4 Your Solr Version must be 4 or higher and you have to import the JTS jar-file which you can get from http://sourceforge.net/projects/jts-topo-suite/ You have to define a field with a fieldType of location_rpt <fieldType name="location_rpt" class="solr.SpatialRecursivePrefixTreeFieldType" spatialContextFactory="com.spatial4j.core.context.jts

I'm trying to check if a point is in polygon. At the moment I have try with this function pointInPolygon:function (point,polygon){ var i; var j=polygon.length-1; var inPoly=false; var lon = point.longitude; var lat = point.latitude; for (i=0; i<polygon.length; i++) { if (polygon[i][0]<lon && polygon[j][0]>=lon|| polygon[j][0]<lon && polygon[i][0]>=lon){ if (polygon[i][0]+(lon-polygon[i][0])/(polygon[j][0]-polygon[i][0])*(polygon[j][1]-polygon[i][1])<lat){ inPoly=!inPoly; } } j=i; } return inPoly; } ... this function is seems to work on simple polygon ( http://jsfiddle.net/zTmr7/3/ ) but it won

Suppose I have a 2 column table like this: | user_id | int(11) | NO | UNI | NULL | | | utm | point | NO | MUL | NULL | | As you can see, it's very simple. utm is a Point data-type. I insert it like this: INSERT INTO mytable(user_id, utm) VALUES(1, PointFromWKB(point(50, 50))); Then, I create a Spatial index. ALTER TABLE mytable ...add spatial index on(utm) or something. (forgot) Alright, everything is good. Now , I want to select * where distance < 99999. But it doesn't work! //This is supposed to select all where the distance is less than 99999999. set @mypoint = PointFromWKB(point(20,20))