Hi,<br><br>So I have a square 2D array, and I want to fill the array with sine values.  The values need to be generated by their coordinates within the array.<br><br>The center of the array should be treated as the angle 90 degrees.  Each of the four edges should be 0 degrees.  The corners, therefore, ought to be -sqrt(2)*90 degrees.  The angle is equal to (distance_from_center/(dimension_of_array/2))*90 degrees.  Then take the sine of this angle.  <br>
<br>To describe another way, if the array is treated like a height-field, a single mound of the sine wave should just fit inside the array.  <br><br>Right now, I&#39;m having trouble because I don&#39;t know how to operate on an array&#39;s values based on the index of the values themselves.  <br>
<br>Help?<br><br>Thanks,<br>Ian<br><div style="visibility: hidden; display: inline;" id="avg_ls_inline_popup"></div><style type="text/css">#avg_ls_inline_popup {  position:absolute;  z-index:9999;  padding: 0px 0px;  margin-left: 0px;  margin-top: 0px;  width: 240px;  overflow: hidden;  word-wrap: break-word;  color: black;  font-size: 10px;  text-align: left;  line-height: 13px;}</style>