<p>This picture accompanies the article on <a href="https://en.wikipedia.org/wiki/bilinear_interpolation" class="extiw" title="en:bilinear interpolation">en:bilinear interpolation</a>. 
</p><p>It is produced from the following <a href="https://en.wikipedia.org/wiki/Xfig" class="extiw" title="en:Xfig">en:Xfig</a> file
</p>
<pre>#FIG 3.2  Produced by xfig version 3.2.5-alpha5
Landscape
Center
Metric
A4      
140.00
Single
-2
1200 2
6 1020 1240 1020 1240
-6
6 1520 800 1520 800
-6
1 3 0 0 0 4 50 -1 20 0.000 1 0.0000 675 2703 45 45 675 2703 720 2703
1 3 0 0 0 4 50 -1 20 0.000 1 0.0000 2925 2703 45 45 2925 2703 2970 2703
1 3 0 0 0 1 50 -1 20 0.000 1 0.0000 1575 450 45 45 1575 450 1620 450
1 3 0 0 0 4 50 -1 20 0.000 1 0.0000 2925 450 45 45 2925 450 2970 450
1 3 0 0 0 1 50 -1 20 0.000 1 0.0000 1575 2703 45 45 1575 2703 1620 2703
1 3 0 0 0 4 50 -1 20 0.000 1 0.0000 675 450 45 45 675 450 720 450
1 3 0 0 0 13 50 -1 20 0.000 1 0.0000 1575 1080 45 45 1575 1080 1620 1080
2 1 2 1 0 7 51 -1 -1 3.000 0 0 -1 0 0 2
 225 450 3285 450
2 1 2 1 0 7 51 -1 -1 3.000 0 0 -1 0 0 2
 225 1080 3285 1080
2 1 2 1 0 7 51 -1 -1 3.000 0 0 -1 0 0 2
 225 2700 3285 2700
2 1 2 1 0 7 51 -1 -1 3.000 0 0 -1 0 0 2
 675 225 675 3150
2 1 2 1 0 7 51 -1 -1 3.000 0 0 -1 0 0 2
 1575 225 1575 3150
2 1 2 1 0 7 51 -1 -1 3.000 0 0 -1 0 0 2
 2925 225 2925 3150
2 1 0 1 0 7 50 -1 -1 0.000 0 0 -1 0 0 3
 225 225 225 3150 3285 3150
4 0 0 50 -1 17 11 0.0000 4 135 135 2985 2633 Q\001
4 0 0 50 -1 17 11 0.0000 4 135 135 2985 380 Q\001
4 0 0 50 -1 17 11 0.0000 4 135 120 1632 380 R\001
4 0 0 50 -1 17 11 0.0000 4 135 120 1632 1013 P\001
4 0 0 50 -1 17 11 0.0000 4 135 120 1632 2633 R\001
4 0 0 50 -1 17 11 0.0000 4 135 135 738 2633 Q\001
4 0 0 50 -1 17 11 0.0000 4 135 135 738 380 Q\001
4 1 0 50 -1 17 11 0.0000 4 150 90 95 485 y\001
4 1 0 50 -1 17 11 0.0000 4 150 90 116 1120 y\001
4 1 0 50 -1 17 11 0.0000 4 150 90 95 2740 y\001
4 1 0 50 -1 17 11 0.0000 4 105 90 665 3285 x\001
4 1 0 50 -1 17 11 0.0000 4 105 90 1565 3285 x\001
4 1 0 50 -1 17 11 0.0000 4 105 90 2920 3285 x\001
4 0 0 50 -1 16 7 0.0000 4 90 75 2974 3325 2\001
4 0 0 50 -1 16 7 0.0000 4 90 75 714 3325 1\001
4 0 0 50 -1 16 7 0.0000 4 90 75 129 2800 1\001
4 0 0 50 -1 16 7 0.0000 4 90 75 129 545 2\001
4 0 0 50 -1 16 7 0.0000 4 90 75 1764 2670 1\001
4 0 0 50 -1 16 7 0.0000 4 90 75 1774 417 2\001
4 0 0 50 -1 16 7 0.0000 4 90 150 888 417 12\001
4 0 0 50 -1 16 7 0.0000 4 90 150 3130 427 22\001
4 0 0 50 -1 16 7 0.0000 4 90 150 3135 2675 21\001
4 0 0 50 -1 16 7 0.0000 4 90 150 883 2670 11\001
</pre>
<a href="https://en.wikipedia.org/wiki/User:Jitse_Niesen" class="extiw" title="wikipedia:User:Jitse Niesen">Jitse Niesen</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
Transferred from <span class="plainlinks"><a class="external text" href="https://en.wikipedia.org">en.wikipedia</a></span> to Commons.