coordinate

Check if a coordinate point are lies in certain box area python [duplicate]

由 微笑、不失礼 提交于 2019-12-12 05:28:37
问题 This question already has an answer here : Python Test If Point is in Rectangle (1 answer) Closed 2 years ago . I have a coordinate point of a place, for example: point_coord = [-7.7938593,110.3634829] I also have a viewport of an area contain two point of corrdinates, for example: northeast = [5.9052479,141.0194444] southwest = [-11.005261,95.01106190000002] If I illustrate these point, it will be look like this: The question is, how do I check if the point_coord is fall or lies in somewhere

How to get image's coordinate on JPanel

由 人盡茶涼 提交于 2019-12-12 05:16:29
问题 This question is related to my previous question How to generate Cartesian Coordinate (x,y) from GridBaglayout? I have successfully get the coordinate of each pictures, however when I checked the coordinate through (System.out.println) and the placement of the images on the screen, it seems to be wrong. e.g. if on the screen it was obvious that the x point of the first picture is on cell 2 which is on coordinate of 20, but the program shows x=1. Here is part of the code: public Grid (){

Android recording coordinates of the point in screen

由 纵饮孤独 提交于 2019-12-08 09:37:02
问题 My activity should record the coordinates of a point on the screen, which the user can move. Specifically, the user touches the screen and appears on the item, which will be able to move. When you lift your finger, the coordinates of the point should be recorded.Please for your advice. 回答1: EDITED Here is whole simple activity which Toasts the user touch down and touch up co-ordinates import android.os.Bundle; import android.app.Activity; import android.view.MotionEvent; import android.widget

problems with two key ranges in couchdb

由 你。 提交于 2019-12-07 18:18:22
问题 I'm having problem getting the right results in my coordinate system. To explain my system, I have this simple database that have x_axis, y_axis and name columns. I don't need to get all the data, I just need to display some part of it. For example, I have a coordinate system that have 10:10(meaning from x_axis -10 to 10 and from y_axis -10 to 10) and I want to display only 49 coordinates. In sql query I can do it something like this: "select * from coordinate where x_axis >= -3 and x_axis <=

Shortest distance between point and path

由 杀马特。学长 韩版系。学妹 提交于 2019-12-07 12:44:49
问题 for a geo-based online game I'm looking for an algorithm which finds the shortest distance between a specified point and a known path connected by x/y-coordinates, so that I can kill all redundant points/nodes. A link or keyword for this algorithm would help me a lot! thanks for reading For better understanding: 回答1: Are you wanting to calculate this in order to say something like "if the point-to-path distance is zero, then remove the point"? If so, then there is probably an easier way to

How to rotate coordinate system?

由 北慕城南 提交于 2019-12-07 04:03:57
问题 I am trying to find the new value of a coordinate if I rotate around the origin. For example, say I have the point (1,1). If I rotate the coordinate axis 45 degrees around the origin, the transformed coordinate would be (0,1.414) Is there a way to do this efficiently in cocos2d, or in objective-c ? Even answers explaining the math to do this would be helpful. 回答1: See this page: http://www.siggraph.org/education/materials/HyperGraph/modeling/mod_tran/2drota.htm This is the formula: x' = x cos

How to convert Earth Centered Inertial (ECI) coordinates to Earth Centered Earth Fixed (ECEF) AstroPy? Other?

由 China☆狼群 提交于 2019-12-06 12:04:13
问题 I have position (x,y,z) and velocity (Vx,Vy,Vz) vectors in Earth Centered Inertial Coordinates (ECI) for a satellite orbit, and ultimately want to end up with geodetic coordinates (Latitude, Longitude, & Altitude). According to this other Stack Overflow question it seems that I need to convert to Earth Centered Earth Fixed (ECEF) coordinates as an intermediate step (so ECI --> ECEF --> Lat/Lon/Alt). I know ECI and ECEF share the same origin point (the center of mass of Earth) and the same z

problems with two key ranges in couchdb

由 南笙酒味 提交于 2019-12-06 04:08:14
I'm having problem getting the right results in my coordinate system. To explain my system, I have this simple database that have x_axis, y_axis and name columns. I don't need to get all the data, I just need to display some part of it. For example, I have a coordinate system that have 10:10(meaning from x_axis -10 to 10 and from y_axis -10 to 10) and I want to display only 49 coordinates. In sql query I can do it something like this: "select * from coordinate where x_axis >= -3 and x_axis <= 3 and y_axis >= -3 y_axis <= 3" I tried this function but no success: "by_range": { "map": "function

Double integral in cartesian coordinate instead of (R,Theta)

由 隐身守侯 提交于 2019-12-06 04:07:30
问题 my previous question (Integral of Intensity function in python) you can see the diffraction model in image below: I want to calculate integral of intensity in each pixel (square), so I can't use R and Theta as variable. How can I do this in X-Y coordinate. Our function: instead of sin(theta) we can use: sintheta= (np.sqrt((x)**2 + (y)**2)/(np.sqrt((x)**2 + (y)**2 + d**2))) Other constants: lamb=550*10**(-9) k=2.0*np.pi/lamb a=5.5*2.54*10**(-2) d=2.8 when you plot function, the result is

Shortest distance between point and path

由 我们两清 提交于 2019-12-06 02:36:45
for a geo-based online game I'm looking for an algorithm which finds the shortest distance between a specified point and a known path connected by x/y-coordinates, so that I can kill all redundant points/nodes. A link or keyword for this algorithm would help me a lot! thanks for reading For better understanding: Are you wanting to calculate this in order to say something like "if the point-to-path distance is zero, then remove the point"? If so, then there is probably an easier way to remove redundant nodes. Take the points three at a time (call them A , B , and C ). Calculate the angle
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