[gradsusr] Png file size 2.1

[Paul Michaelwaite]

Thanks Jennifer, both those options sound like they ought to work for us.

Paul


On 16 December 2013 18:17, Jennifer Adams <jma at cola.iges.org> wrote:

> Yes, the large file size of the image output is a known feature of Cairo
> graphics. I believe it is due to the expanded color map; the way that the
> anti-aliasing algorithm blends colors into the background introduces many
> new colors (in addition to any colors that are defined by the GrADS user).
> If you are concerned about image file size, then you can convert it to JPEG
> format and use compression, or try another tool called pngquant (
> pngquant.org) which reduces the size of PNG images.
> --Jennifer
>
> On Dec 16, 2013, at 12:09 PM, Paul Michaelwaite wrote:
>
> Hi, congratulations on 2.1, it looks excellent. One thing we are finding
> with it though is that the file sizes of the png's being outputted are much
> larger than on previous versions, a typical chart previously would have
> been 80-120kb, now it's 500-600kb. Is there any possible way to reduce that
> back?
>
> Many thanks
>
> Paul
>
>
>
> --
> Paul Michaelwaite
>
> DDI +44 (0)1386 576121
> Mobile +44 (0)7834 830099
>
> Confidentiality Statement : This email may contain confidential and
> privileged information and is intended solely for the addressee. Access to
> this email by anyone else is unauthorised. If you are not the intended
> recipient, any disclosure, copying, distribution or use of this message, is
> prohibited and may be unlawful. If you have received this message in error
> please notify the sender by reply email and delete the mail from your
> computer. Should this email contain a quotation the following statement
> will apply :"This quotation is made and any resulting order placed shall be
> subject to MBC Netweather Ltd Standard Conditions of Sale. These Conditions
> are available on request."
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>
> --
> Jennifer M. Adams
> Center for Ocean-Land-Atmosphere Studies (COLA)
> 111 Research Hall, Mail Stop 2B3
> George Mason University
> 4400 University Drive
> Fairfax, VA 22030
>
>
>
>
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>


-- 
Paul Michaelwaite

DDI +44 (0)1386 576121
Mobile +44 (0)7834 830099

Confidentiality Statement : This email may contain confidential and
privileged information and is intended solely for the addressee. Access to
this email by anyone else is unauthorised. If you are not the intended
recipient, any disclosure, copying, distribution or use of this message, is
prohibited and may be unlawful. If you have received this message in error
please notify the sender by reply email and delete the mail from your
computer. Should this email contain a quotation the following statement
will apply :"This quotation is made and any resulting order placed shall be
subject to MBC Netweather Ltd Standard Conditions of Sale. These Conditions
are available on request."
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://gradsusr.org/pipermail/gradsusr/attachments/20131216/9d2279b9/attachment.html