coordinates

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 11 months ago . Improve this question How to convert pixel/screen coordinates to cartesian coordinates(x,y)? The info I have on the pictures is (see image): vFov in degrees, hFov in degrees, pixel width, pixel height Basically what I want is to take any pixel on the image, and calculate the relative degrees it

问题 I'm trying to make use of some geolocation functionality in mongodb. Using a find query with $near doesn't seem to work! I currently have this object in my database: { "Username": "Deano", "_id": { "$oid": "533f0b722ad3a8d39b6213c3" }, "location": { "type": "Point", "coordinates": [ 51.50998, -0.1337 ] } } I have the following index set up as well: { "v": 1, "key": { "location": "2dsphere" }, "ns": "heroku_app23672911.catchmerequests", "name": "location_2dsphere", "background": true } When I

问题 I want to do something which is probably really simple however I can't seem to figure it out. I integrated the Angular2+ Google Maps module to my Angular project (https://angular-maps.com/). Now I want to be able to replace the marker by clicking somewhere on the map. In order to do this I need to fetch the coordinates of the location where the user clicked on the map. If I have these coordinates I can update the longitude and latitude to move the marker. However I am not sure how to fetch

问题 I want to do something which is probably really simple however I can't seem to figure it out. I integrated the Angular2+ Google Maps module to my Angular project (https://angular-maps.com/). Now I want to be able to replace the marker by clicking somewhere on the map. In order to do this I need to fetch the coordinates of the location where the user clicked on the map. If I have these coordinates I can update the longitude and latitude to move the marker. However I am not sure how to fetch

问题 I notice that a lot of drawing APIs have their 0,0 origin at the top left corner, so y actually goes down as it increases. I wonder why is that? Any particular advantage to not working in what I personally consider to be more logical bottom left corner (the origin of a regular x/y grid), which also happens to be the native representation of coordinates in hardware rendering APIs? Or maybe it has something to do with the way scanline rendering or even display refresh goes? 回答1: 2D raster

问题 I have two sets of coordinates and want to find out which coordinates of the coo set are identical to any coordinate in the targets set. I want to know the indices in the coo set which means I'd like to get a list of indices or of bools. import numpy as np coo = np.array([[1,2],[1,6],[5,3],[3,6]]) # coordinates targets = np.array([[5,3],[1,6]]) # coordinates of targets print(np.isin(coo,targets)) [[ True False] [ True True] [ True True] [ True True]] The desired result would be one of the

问题 I have two sets of coordinates and want to find out which coordinates of the coo set are identical to any coordinate in the targets set. I want to know the indices in the coo set which means I'd like to get a list of indices or of bools. import numpy as np coo = np.array([[1,2],[1,6],[5,3],[3,6]]) # coordinates targets = np.array([[5,3],[1,6]]) # coordinates of targets print(np.isin(coo,targets)) [[ True False] [ True True] [ True True] [ True True]] The desired result would be one of the

问题 I have two sets of coordinates and want to find out which coordinates of the coo set are identical to any coordinate in the targets set. I want to know the indices in the coo set which means I'd like to get a list of indices or of bools. import numpy as np coo = np.array([[1,2],[1,6],[5,3],[3,6]]) # coordinates targets = np.array([[5,3],[1,6]]) # coordinates of targets print(np.isin(coo,targets)) [[ True False] [ True True] [ True True] [ True True]] The desired result would be one of the

问题 I have a C program where a CSV file containing 8 x,y coordinates are inserted into a linked list. Each of the 8 coordinates belongs in a 2x2 grid. There are 4 grids as seen in the picture below: First I want my program to determine which coordinate belongs in which grid. Once I've determined that, for each grid, I want to sum all of the x-coordinates and y-coordinates. Then for each grid 1-4, I want to then print the total sum of the x coord and y coord. #include <stdio.h> #include <stdlib.h>

问题 I want to add an electronic signature to a pdf. i am using signature pad library for capturing signature and sticker view for moving, scaling and rotating image StickerView. I am rendering the PDF in android using PDFView library to render PDF. i am using PDFbox by tomroush to manipulate pdf in android. i want to add image of signature to the pdf. but there is problem in mapping android view coordinates to pdf box coordinates. i am attaching code for what i have tried //loading pdf pdfView