coordinate-transformation

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 have a control with a PictureBox within it. The PictureBox displays an image (in Zoom mode, at least in this particular case). I need to do two kinds of things: Click with the mouse and find out which pixel of the image I hit Draw a vertical line over the PictureBox at a given column in the image. Obviously, I need some kind of coordinate transformations between the control coordinates and the (row, column) of the pixel in the image. The first one I may have found (www.codeproject.com

问题 I have a control with a PictureBox within it. The PictureBox displays an image (in Zoom mode, at least in this particular case). I need to do two kinds of things: Click with the mouse and find out which pixel of the image I hit Draw a vertical line over the PictureBox at a given column in the image. Obviously, I need some kind of coordinate transformations between the control coordinates and the (row, column) of the pixel in the image. The first one I may have found (www.codeproject.com

问题 I've written a code to draw a line. Here is the function: def drawLines(): r,g,b = 255,30,20 #drawing visible axis glClear(GL_COLOR_BUFFER_BIT) glColor3ub(r,g,b) glBegin(GL_LINES) #glRotate(10,500,-500,0) glVertex2f(0,500) glVertex2f(0,-500) glEnd() glFlush() Now I'm trying to rotate the line. I'm trying to follow this documentation but can't understand. According to the documentation the rotating function is defined as follows: def glRotate( angle , x , y , z ): I've no z-axis. So I'm

问题 I've written a code to draw a line. Here is the function: def drawLines(): r,g,b = 255,30,20 #drawing visible axis glClear(GL_COLOR_BUFFER_BIT) glColor3ub(r,g,b) glBegin(GL_LINES) #glRotate(10,500,-500,0) glVertex2f(0,500) glVertex2f(0,-500) glEnd() glFlush() Now I'm trying to rotate the line. I'm trying to follow this documentation but can't understand. According to the documentation the rotating function is defined as follows: def glRotate( angle , x , y , z ): I've no z-axis. So I'm

问题 I've written a code to draw a line. Here is the function: def drawLines(): r,g,b = 255,30,20 #drawing visible axis glClear(GL_COLOR_BUFFER_BIT) glColor3ub(r,g,b) glBegin(GL_LINES) #glRotate(10,500,-500,0) glVertex2f(0,500) glVertex2f(0,-500) glEnd() glFlush() Now I'm trying to rotate the line. I'm trying to follow this documentation but can't understand. According to the documentation the rotating function is defined as follows: def glRotate( angle , x , y , z ): I've no z-axis. So I'm

问题 me and a friend are trying to build an android app for class that uses google maps and we have been spending days on this one error. Ideally the app receives updates of the user's location, stores them, and paints over any stored coordinate. That turned out to be a nightmare to implement so right now we're just trying to paint over the entire tile if that tile contains a coordinate that the user has visited. However we think something's wrong with our conversion from coordinate to tile

问题 When programmatically adding an array of GPS Coordinates to a Bing Map, I want to set the Zoom level to the optimal - to show every pushpin/location, but "just barely." I imagine a way to do this would be to identify the furthest points in the cardinal directions found within the array of coordinates, and then calculate how many miles you need to display both east-to-west and north-to-south. For example, let's say the furthest north and furthest south locations are determined to be forty

问题 When programmatically adding an array of GPS Coordinates to a Bing Map, I want to set the Zoom level to the optimal - to show every pushpin/location, but "just barely." I imagine a way to do this would be to identify the furthest points in the cardinal directions found within the array of coordinates, and then calculate how many miles you need to display both east-to-west and north-to-south. For example, let's say the furthest north and furthest south locations are determined to be forty

问题 I am trying to convert some datasets into the same coordinate system (NC2264) NC2264 = 'EPSG:2264' sfd_subs = pd.read_csv(r'FILE_LOCATION.csv') wake_shapes = gpd.GeoDataFrame.from_file(r'FILE_LOCATION.shp').to_crs(NC2264) sfd_subs = gpd.GeoDataFrame(sfd_subs, geometry=gpd.points_from_xy(sfd_subs.Longitude, sfd_subs.Latitude),crs='EPSG:4326') sfd_subs.to_crs(NC2264) print(sfd_subs.crs) The shapefile conversion works perfectly but the 'sfd_subs' remains unchanged. I'm getting no errors. I've