Good day all I have a non rectangular extent and a raster image with known width and height. Using this data I need to create a world file (with rotation parameters). I got my script working with rectangular extents but* I don't know how to calculate the pixel width and pixel height of a non rectangular extent*.
At the moment I have: //works only with rectangular extent $this->_pixelWidth = ($extent['topRight']['x'] - $extent['bottomLeft']['x']) / $size['width']; $this->_pixelHeight = ($extent['topRight']['y'] - $extent['bottomLeft']['y']) / $size['height'] * -1; $this->_rotationX = ($this->_pixelHeight * $size['height'] + $extent['topLeft']['y'] - $extent['bottomRight']['y']) / $size['width'] * -1; $this->_rotationY = ($this->_pixelWidth * $size['width'] + $extent['topLeft']['x'] - $extent['bottomRight']['x']) / $size['height'] * -1; $this->_topLeftX = $extent['topLeft']['x']; $this->_topLeftY = $extent['topLeft']['y']; Thank you in advance -- http://iap.md, The future is open
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