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IERS Message No. 206                                   February 27, 2012
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New visualization tools for time series online on the IDS web site


Dear colleagues,

A new set of tools, we called Plot tools, is available on the IDS
website to interactively build and display graphs of DORIS station
coordinates time series and orbit residuals:

http://ids-doris.org/plot-tools.html


These web tools are:

- STCDtool providing station coordinates time series (North, East,
Up residuals) from the IDS Analysis Centers.

http://ids-doris.org/plottool/stcdtool.php


- POEtool providing statistics time series (orbit residuals and number
of measurements for the DORIS stations) from CNES Precise Orbit
Determination processing.

http://ids-doris.org/plottool/poetool.php


Possibilities are offered to edit data, change graph appearance, get
statistics. Several plots may be plotted on the same graph and
additional data such as station and satellite events may be added. Data,
plots and graph statistics can be exported in different formats.

Note that some biases may exist between the station coordinates time
series of the Analysis Centers. They can be explained by the choice of
different reference positions. On the other hand, for one same site,
discontinuities may be observed from one station to another. This can be
due to the non-inclusion of the ties between the successive stations. An
effort will be done in the near future to correct these current
imperfections.

We hope that these tools will be helpful for DORIS analysts and that
they will be appreciated. All suggestions of improvement are welcome.

Best regards,
Laurent Soudarin
On behalf of the IDS Central Bureau.


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