https://ojwiki.soldin.de/index.php?action=history&feed=atom&title=TFW_%28World_File%29_Format 2026-04-22T04:58:16Z Revision history for this page on the wiki MediaWiki 1.35.5 https://ojwiki.soldin.de/index.php?title=TFW_(World_File)_Format&diff=223&oldid=prev 2009-10-12T00:23:33Z

<p>Created page with &#039;&#039;&#039;Original Spanish by Ezequias Rodrigues da Rocha. English translation by Leonel Goncalves and Carl Anderson.&#039;&#039; &lt;hr&gt; A World File has 1.000000000000000 0.000000000000000 …&#039;</p> <p><b>New page</b></p><div>&#039;&#039;Original Spanish by Ezequias Rodrigues da Rocha. English translation by Leonel Goncalves and Carl Anderson.&#039;&#039;<br /> <br /> &lt;hr&gt;<br /> <br /> A World File has<br /> <br /> 1.000000000000000<br /> 0.000000000000000<br /> 0.000000000000000<br /> -1.000000000000000<br /> 210326.500000000000000<br /> 4146551.500000000000000<br /> <br /> Line 1: (A) X scale in resulting X direction<br /> Line 2: (B) Y scale in resulting X direction<br /> Line 3: (C) X scale in resulting Y direction<br /> Line 4: (D) Y scale in resulting Y direction<br /> Line 5: (E) X coordinate of the center of the center of rotation (the center of the Upper Left Pixel of the unrotated image)<br /> Line 6: (F) Y coordinate of the center of the center of rotation (the center of the Upper Left Pixel of the unrotated image)<br /> <br /> or in algebraic form<br /> <br /> X&#039; = (A*X) + (B*Y) + E<br /> Y&#039; = (C*X) + (D*Y) + F<br /> <br /> where X&#039; and Y&#039; are georeferenced coordinates and x is pixel columns and y is pixels rows<br /> <br /> D is negative because pixel rows increase opposite an increasing northing direction.<br /> B and C are zero for unrotated and unsheared georeferences A and D are zero for 90 and 270 degree rotations google world file ax + by center for more references<br /> <br /> &lt;hr&gt;<br /> <br /> Anexo I: Formato TFW.<br /> Un ejemplo de fichero TFW sería el siguiente:<br /> <br /> 1.000000000000000<br /> 0.000000000000000<br /> 0.000000000000000<br /> -1.000000000000000<br /> 210326.500000000000000<br /> 4146551.500000000000000<br /> <br /> La primera línea indica el tamaño del pixel en la dirección X, en metros, de la imágen.<br /> La segunda linea nos indica la coordenada pixel X, de un punto cualquiera de la imágen (lo normal la esquina superior izquierda (xmin, ymax).<br /> La tercera línea la coordenada pixel Y del punto de la imágen.<br /> La cuarta línea el tamaño del pixel en la dirección Y, en metros de la imágen. Un valor negativo indica que el punto de coordenada Ypixel = 0 es el punto que tiene un valor de coordenada Y real mayor.<br /> La quinta linea nos da la coordenada X real del punto utilizado para georreferenciar la imágen.<br /> La sexta línea la coordenada Y real del citado punto.<br /> <br /> &lt;hr&gt;<br /> <br /> &#039;&#039;Ole Rahn adds:&#039;&#039;<br /> <br /> Just one thing:<br /> As far as I know (I was corrected by a user myself) the world file extension consists of the following parts:<br /> [dot] [1st letter of the image&#039;s extension] [last letter of the image&#039;s extension] [w]<br /> <br /> ... so for a PNG it should be: &quot;.pgw&quot; (not &quot;.pngw&quot;)<br /> <br /> A good explanation in english can also be found at: http://www.feflow.info/html/help/general/file_format.html#tfw_file</div>

Mentaer