Re: Tweak for interactive SVGs?

[James R. V. Z. <jr...@co...>]

Peter <pl...@pi...> writes:
>James R. Van Zandt wrote:
>> I would also like a way to select a data point on the graph and
>> display information about it.  In particular:
>>
>>  - The X, Y (Z, T, U, V) data value, with full precision (not
>>    transformed to integer screen coordinates then transformed back).
>>    Also DX and DY for errorbars graphs.
>>
>>  - Where it came from (file name, line, index, line within index,
>>    etc.).  Useful for tracking down an outlier.
>
>Don't forget that we are talking about the graphical output of a
>plotting program. This may be a function plot not data or a log plot or
>a result of applying a function to the difference of two data series.
>
>I don't think what you suggests has much meaning outside of a trivial x,y
>plot of the input data and while svg has individual vectors for x,y data
>the bitmapped output do not.

Maybe SVG is the only format that writes full-precision values into
the output file.  If they come from a data file, then depending on its
size, it can be non-trivial to identify where a particular point came
from.  And if the points didn't come from a data file, I would still
like to have access to the full-precision values.

       - Jim Van Zandt