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Date/Time: Mon, 29 Apr 2024 13:24:33 +0000



Query re new chart format - cht file size not as expected

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[2020-06-09 17:55:48]
User92573 - Posts: 483
Dear Support

I have read through: Version 2093: New Chartbook Format, Better Data Management in Sub Instances, Other and I am currently using version 2118.

Following the version upgrade from 2073 where I had 11 chartbooks - I now have 13. The 2 additional chartbooks have the mentioned *.backup2092.cht.

Please would you answer the following:

1. Why have only 2 of the 11 chartbooks been backed up?
2. The thread mentions a reduction of about 20-27% however of the two chartbooks that that were saved as *.backup2092.cht.

A.cht = 9KB (95% reduction) and A.backup2092.cht = 193KB?
B.cht = 90KB (97% reduction) and B.backup2092.cht = 2875KB?

I am obviously concerned as to what might be missing now these have been reduced by such a degree. Ideally I don't want chartbooks and backups in my Data folder but I am concerned about deleting the backup as there is a significant difference in the file size.

As always I look forward to your assistance and as much information as your time allows.

Kind regards
[2020-06-09 18:07:50]
Sierra Chart Engineering - Posts: 104368
This is from the notes for version 2111:
Added support for file compression for Chartbooks. This reduces the file size by 98%. In version 2118 and higher, when a Chartbook is saved which uses compression, a backup of the existing Chartbook is made with the suffix .backup2109 followed by the standard file extension.

Sierra Chart Support - Engineering Level

Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy:
https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation

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[2020-06-12 07:36:03]
User92573 - Posts: 483
That's great, many thanks I had not read it fully. My apologies.

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