Maxwell Troubleshooting

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* If you have not created any metrics for a track, then you have not told Maxwell what you want to know, what you want Maxwell to "report."
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* If you have not created any [[Maxwell_Glossary#Metrics|metrics]] for a track, then you have not told Maxwell what you want to know, what you want Maxwell to "report."
Run through the procedure for "[http://www.colorwiki.com/wiki/Maxwell_Metrics#How_to_Create_Metrics_for_a_Track Creating Metrics for a Track.]"
Run through the procedure for "[http://www.colorwiki.com/wiki/Maxwell_Metrics#How_to_Create_Metrics_for_a_Track Creating Metrics for a Track.]"
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==Why do my measurements end up being all black?==
==Why do my measurements end up being all black?==

Revision as of 19:48, 2 April 2013

Contents

Trend Report says "No Data Available"

"No data available"

When I run a Trend Report, why does Maxwell say "No Data Available" when I have several measurements uploaded?

Possible solutions

Run through the procedure for "Creating Metrics for a Track."

Why do my measurements end up being all black?

example of a measurement file with commas as decimal points.

I have successfully used ColorShuttle to measure my targets and saw that it passed my pass/fail test. All is fine until I go look at my track in Maxwell and see that all the patches measure black (0, 0, 0) in Maxwell online. The files I upload from another computer work fine.

Possible Solutions



Comparing my reference to the same file, I get small dE values (I'm expecting to get all zeros.)

Comparing identical measurements

I uploaded a file to use as a reference for my track. I also uploaded the same file into that track as a measurement. That measurement should be identical to the reference, so I should get all zero's, but instead the Results Summary shows some small differences. What's going on?

Answer

Your reference file has several sets of patches with identical device values. You can identify these by clicking on the DeviceValues header and sorting by device values. (There are 3 incidences of the (CMYK) 0, 0, 0, 0 for example.) Each of the identical colors will have a different set of Lab values because they will all be measured slightly differently. When Maxwell searches a list of colors, it will pick the first set it finds and use that as the reference. Therefore, all the duplicate patches will show a slight difference compared to the one that is chosen to be the true reference.


Sort by device values to identify duplicates

Knowing this, you now have some useful information. The delta E differences you see among duplicate patches can give you an idea of how much print variation is on your sheet, or how much variation is inherent in your measurement process.


Note that this is likely to occur if you happen to be using a reference file that was an actual measurement of a target. Here are some ways to avoid this confusion:



ColorShuttle messages

ColorShuttle should be restarted, the track should be unbonded, and then re-bonded again.


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