interpet a graph

[[Ro...]]

I scanned a face ( inside to outside) on a part. I check it 4 places 90 degrees apart. Then checked the straightness on them with the graph. My question is, what does the green line tell me on the graph. 2 of the graphs have it to the left of the graph and the other 2 have it to the right. Would this be the start of the scan or what. Like I said, I started all 4 scans on the inside of the face so wouldn't they all start in the same direction if that is what the green line means. Also what does the "X" "Y" and "Z" lines tell me. We are just starting to use the piweb reports. (see attch.) Thanks in advance

grapksDoc1.pdf

[[De...]]

To interpret the charts, you have to look at the axis indicator in your charts as well as the numbers along each axes of the chart.

From there you can tell which is which, my guess is the green line you are talking about is indeed the part of the scan that is not being evaluated. You can easily check this by checking the measuring strategy against your results.

For instance your first result is reporting with the Z axis on the vertical chart axis and the Y Axis on the Horizontal chart axis.

The Z Axis is reporting a range between -1 and 1 and the Y axis is reporting a range between -2.6383 and -2.80

It appears that the data prior to -2.6383 is not being evaluated.

Two charts are reporting ZY, it appears that the other two charts are on an angle and therefore are not aligned to a specific axis since the axis indicator is showing X Y and Z.

Looking at the numbers you can determine which end of the scan the green line is coming from.