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diff --git a/html/jpgraph/jpgraph_meshinterpolate.inc.php b/html/jpgraph/jpgraph_meshinterpolate.inc.php
deleted file mode 100644
index 7e8ae53..0000000
--- a/html/jpgraph/jpgraph_meshinterpolate.inc.php
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-<?php
-/*=======================================================================
-// File:        JPGRAPH_MESHINTERPOLATE.INC.PHP
-// Description: Utility class to do mesh linear interpolation of a matrix
-// Created:     2009-03-09
-// Ver:         $Id: jpgraph_meshinterpolate.inc.php 1709 2009-07-30 08:00:08Z ljp $
-//
-// Copyright (c) Asial Corporation. All rights reserved.
-//========================================================================
-*/
-  
-/**
-* Utility function to do linear mesh interpolation
-* @param $aDat Matrix to interpolate
-* @param $aFactor Interpolation factor  
-*/
-function doMeshInterpolate( &$aData, $aFactor ) {
-    $m = new MeshInterpolate();
-    $aData = $m->Linear($aData,$aFactor);
-}
-
-/**
- * Utility class to interpolate a given data matrix
- *
- */
-class MeshInterpolate {
-    private $data = array();
-
-   /**
-    * Calculate the mid points of the given rectangle which has its top left
-    * corner at $row,$col. The $aFactordecides how many spliots should be done.
-    * i.e. how many more divisions should be done recursively
-    *
-    * @param $row Top left corner of square to work with
-    * @param $col Top left corner of square to work with
-    * $param $aFactor In how many subsquare should we split this square. A value of 1 indicates that no action
-    */
-    function IntSquare( $aRow, $aCol, $aFactor ) {
-        if ( $aFactor <= 1 )
-            return;
-
-        $step = pow( 2, $aFactor-1 );
-
-        $v0 = $this->data[$aRow][$aCol];
-        $v1 = $this->data[$aRow][$aCol + $step];
-        $v2 = $this->data[$aRow + $step][$aCol];
-        $v3 = $this->data[$aRow + $step][$aCol + $step];
-
-        $this->data[$aRow][$aCol + $step / 2] = ( $v0 + $v1 ) / 2;
-        $this->data[$aRow + $step / 2][$aCol] = ( $v0 + $v2 ) / 2;
-        $this->data[$aRow + $step][$aCol + $step / 2] = ( $v2 + $v3 ) / 2;
-        $this->data[$aRow + $step / 2][$aCol + $step] = ( $v1 + $v3 ) / 2;
-        $this->data[$aRow + $step / 2][$aCol + $step / 2] = ( $v0 + $v1 + $v2 + $v3 ) / 4;
-
-        $this->IntSquare( $aRow, $aCol, $aFactor-1 );
-        $this->IntSquare( $aRow, $aCol + $step / 2, $aFactor-1 );
-        $this->IntSquare( $aRow + $step / 2, $aCol, $aFactor-1 );
-        $this->IntSquare( $aRow + $step / 2, $aCol + $step / 2, $aFactor-1 );
-    }
-
-    /**
-     * Interpolate values in a matrice so that the total number of data points
-     * in vert and horizontal axis are $aIntNbr more. For example $aIntNbr=2 will
-     * make the data matrice have tiwce as many vertical and horizontal dta points.
-     *
-     * Note: This will blow up the matrcide in memory size in the order of $aInNbr^2
-     *
-     * @param  $ &$aData The original data matricde
-     * @param  $aInNbr Interpolation factor
-     * @return the interpolated matrice
-     */
-    function Linear( &$aData, $aIntFactor ) {
-        $step = pow( 2, $aIntFactor-1 );
-
-        $orig_cols = count( $aData[0] );
-        $orig_rows = count( $aData );
-        // Number of new columns/rows
-        // N = (a-1) * 2^(f-1) + 1
-        $p = pow( 2, $aIntFactor-1 );
-        $new_cols = $p * ( $orig_cols - 1 ) + 1;
-        $new_rows = $p * ( $orig_rows - 1 ) + 1;
-
-        $this->data = array_fill( 0, $new_rows, array_fill( 0, $new_cols, 0 ) );
-        // Initialize the new matrix with the values that we know
-        for ( $i = 0; $i < $new_rows; $i++ ) {
-            for ( $j = 0; $j < $new_cols; $j++ ) {
-                $v = 0 ;
-                if ( ( $i % $step == 0 ) && ( $j % $step == 0 ) ) {
-                    $v = $aData[$i / $step][$j / $step];
-                }
-                $this->data[$i][$j] = $v;
-            }
-        }
-
-        for ( $i = 0; $i < $new_rows-1; $i += $step ) {
-            for ( $j = 0; $j < $new_cols-1; $j += $step ) {
-                $this->IntSquare( $i, $j, $aIntFactor );
-            }
-        }
-
-        return $this->data;
-    }
-}
-  
-?>