PROBING MATER points result different via G29 and height map.

raymond

When I run G29,I get this result

17:24:06.644 : Z-probe:10.66 X:-30.00 Y:50.00

17:24:17.646 : Z-probe:10.67 X:140.00 Y:50.00

17:24:29.046 : Z-probe:10.88 X:-30.00 Y:198.00

17:24:52.625 : X:-30.00 Y:0.00 Z:0.000 E:0.0000

17:24:52.625 : Z-probe average height:10.74

BUt  when I run the Create Height Map,the result is like this.

17:24:52.626 : X:-30.00 Y:0.00 Z:0.000 E:0.0000

17:25:00.683 : X:-30.00 Y:0.00 Z:0.000 E:0.0000

17:25:28.068 : Z-probe:10.65 X:-30.00 Y:50.00

17:25:38.542 : Z-probe:10.04 X:52.50 Y:50.00

17:25:48.696 : Z-probe:10.01 X:135.00 Y:50.00

17:25:59.935 : Z-probe:9.77 X:-30.00 Y:122.50

17:26:10.089 : Z-probe:10.15 X:52.50 Y:122.50

17:26:20.451 : Z-probe:10.30 X:135.00 Y:122.50

17:26:31.820 : Z-probe:9.78 X:-30.00 Y:195.00

17:26:41.910 : Z-probe:10.12 X:52.50 Y:195.00

17:26:52.224 : Z-probe:10.24 X:135.00 Y:195.00

17:27:18.955 : X:-30.00 Y:0.00 Z:0.000 E:0.0000

Point X:-30.00 Y:50.00  almost same but other points are so different,why?

Repetier

G29 only computes average height from current position at 3 points which is what you see.

Height map uses autolevel if enabled (also it does not look like it is) and measures while correcting z. It returns a value at every measured point and that seems to differ per point as I see the log so your bed is rotated a bit. So there is no reason to expect that the average of 3 points matches a single point.