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Align DEM subset to input DEM grid #119

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Align DEM subset to input DEM grid #119

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8 changes: 4 additions & 4 deletions ...-op-sar-processing/src/main/java/org/esa/s1tbx/sar/gpf/geometric/TerrainFlatteningOp.java
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Original file line number Diff line number Diff line change
Expand Up @@ -563,10 +563,10 @@ private boolean generateSimulatedImage(final int x0, final int y0, final int w,

final double extralat = 20 * demResolution;
final double extralon = 20 * demResolution;
final double latMin = latLonMinMax[0] - extralat;
final double latMax = latLonMinMax[1] + extralat;
final double lonMin = latLonMinMax[2] - extralon;
final double lonMax = latLonMinMax[3] + extralon;
final double latMin = Math.floor((latLonMinMax[0] - extralat) / demResolution) * demResolution;
final double latMax = Math.ceil((latLonMinMax[1] + extralat) /demResolution) * demResolution;
final double lonMin = Math.floor((latLonMinMax[2] - extralon) / demResolution) * demResolution;
final double lonMax = Math.ceil((latLonMinMax[3] + extralon) / demResolution) * demResolution;

final int rows = (int) Math.round((latMax - latMin) / demResolution);
final int cols = (int) Math.round((lonMax - lonMin) / demResolution);
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