'Mean calculation of test chart data' Dialog

You can call up this dialog with the "Test chart > Calculate mean data" menu.

With this dialog, you can import data from the same type of test charts to Color Toolbox so that you can average measured values. A document must be loaded in order to open this dialog. You must have added at least one other test chart file in order to average the data.

Note: When you go to the "Analysis" main function, all the test chart files in the loaded series are shown in the "List of test chart files to merge". For that reason, you should remove any test chart files that are not to be averaged from the list.

This function is useful, for example, if the printing process is not stable, in other words, if there are noticeable fluctuations in the (proof) print of the test chart. You can then measure the various signa­tures with the printed test chart. In this way, you obtain mean values for your printing process.

If you have a "good" signature and would like it to feature more during your averaging process, you can also use the same color data several times when determining the mean.

Process colors / Test chart type

The number of process colors and the test chart type of the open or empty (new) test chart file are displayed here (for example, "4-color CMYK" and "ISO 28178").

Click "Add..." to open the "Open" dialog where you can search for and select the files you want. "Mea­sured data (.txt, .it8)" must be set for "Files of type".

When you double-click the file name or select the file and click "Open", the selected file is copied to the "List of test chart files to merge" in the "Merging of test chart data" dialog. Select all files whose color data are to be averaged. Multiple selection is possible.

Note: The number of process colors and test chart type must always match the open test chart file.

You delete a selected file from the list by clicking "Remove".

When you click "Merge files...", the mean value is calculated for every measured value from all the test chart files in the list.

The mean values replace the corresponding values in the open (first) test chart file.
The mean values are displayed as color patches.

Click "OK" to apply the mean data to the test chart file. The dialog closes. The measured data are dis­played as color patches.

Click "Cancel" to close the dialog and discard the mean data.