Reducing PDF-size: automatic reduction of datapoints that are used to draw lines in a 2d-axis system within report

[MortAC]

Creating fancy pdf-files for costumers and other purposes is great. However, if the experimental data include many datapoints (>200000) a line-2d-graph ends up in a very big pdf-file. Especially when many pages need to be used.

Explanation:

When I use lines to show experimental data in 2d-plots the size of my PDF-file is directly influenced by the number of datapoints used. The more datapoints are used to draw lines within the graph, the bigger the exported PDF-files of the report are.

It would be great to limit the number of points used to draw a line as it can be done with markers without using the curve transformation option. - Hence, e.g. plotting a line with the help of 200 datapoints is usually as good as showing the same line based on 200000 datapoints but the pdf-size is significantly reduced. You can imagine that when this would be done via the transformation option a long lasting script would be needed for each line to reduce the number of datapoints shown. Hence, the plotting within the report and the actualisation of data would need very long.

[dietfons]

Since a while DIAdem optimizes the size of exported PDF-files in a related way as it is suggested here. In principle the PDF-file is exported in a very high resolution, so you can display it in a reader with a very high zoom value (e. g. 6000 %) to look into details of your data. If you have a huge dataset, this could lead in fact to a bigger file size, if data points could be displayed because the high PDF-resolution. But in general, DIAdem only saves information in a PDF-file which is really necessary - but with a high resolution.