[GRASS-dev] t.vect.observe.strds differences between trunk and release branch

[Veronica Andreo]

Hi

Here is the diff file for *release branch* manual page. It just adds a line
or so explaining that t_where in t.vect.observe.strds works only when one
strds is to be sampled.

Best,
Vero

2016-01-20 22:57 GMT-03:00 Veronica Andreo <veroandreo at gmail.com>:

> Hi Soeren,
>
> Thanks for your answer :)
> I perfectly understand. I wish I could be of more help, though.
>
> I do not know how to add such a warning in the module, but I would
> suggest, if you don't have any objections, to add a side note in the manual
> page (or maybe just in the description section) stating this special
> behavior. Probably something simple like: "*The temporal where will work
> as expected only when one strds is to be sampled. Otherwise, if more than
> one strds are selected, t_where will not be considered.*"
>
> IMHO, the t_where is a very nice feature, even though it does not work in
> this special case of more than one strds.
>
> Best,
> Vero
>
> 2016-01-18 15:35 GMT-03:00 Sören Gebbert <soerengebbert at googlemail.com>:
>
>> Hi,
>> the reason behind the removal of the temporal where option was, that
>> it will not work in certain conditions when several STRDS are
>> involved. A warning will not be printed if the result is wrong. Hence,
>> i removed the option, since i do not have the time to implement an
>> always proper working solution.
>>
>> Best regards
>> Soeren
>>
>> 2016-01-15 0:24 GMT+01:00 Markus Neteler <neteler at osgeo.org>:
>> > Hi Vero,
>> >
>> > On Fri, Jan 8, 2016 at 6:56 PM, Veronica Andreo <veroandreo at gmail.com>
>> wrote:
>> >> Hi devs,
>> >>
>> >> I was using t.vect.observe.strds and while reading the manual from
>> grass71
>> >> (https://grass.osgeo.org/grass71/manuals/t.vect.observe.strds.html),
>> I found
>> >> that in the Description section a parameter "t_where" was mentioned
>> >> while not listed under Parameters.
>> >
>> > Thanks for catching that: I have remove the reference to t_where
>> > parameter t.vect.observe.strds manual as it was deleted in r64560.
>> >
>> >> However, this t_where parameter is present for
>> >> t.vect.observe.strds in grass70 manual
>> >> (https://grass.osgeo.org/grass70/manuals/t.vect.observe.strds.html).
>> >>
>> >> I found in trac that changeset 64560, removes t_where from trunk since
>> it is
>> >> not supported in case of multiple strds sampling, but I did not find
>> >> something similar for release branch. Is there a reason why it should
>> work
>> >> in 70 but not in 71?
>> >
>> > I guess it doesn't always work in relbranch70.
>> > Maybe Soeren knows?
>> >
>> >
>> > Markus
>>
>
>
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Index: temporal/t.vect.observe.strds/t.vect.observe.strds.html
===================================================================
--- temporal/t.vect.observe.strds/t.vect.observe.strds.html	(revision 67790)
+++ temporal/t.vect.observe.strds/t.vect.observe.strds.html	(working copy)
@@ -9,8 +9,10 @@
 be sampled over time at the vector point positions. The space time 
 raster dataset will be sampled over its whole temporal extent (from 
 start to end). The range can be adjusted using the temporal where 
-condition <em>t_where</em>. A column name must be specified for each 
-input space time raster dataset.
+condition <em>t_where</em>. The temporal where will only work as 
+expected when just one STRDS is to be sampled. If more than one STRDS 
+are to be observed, a column name must be specified for each input space
+time raster dataset.
 <p>
 As results  a new space time vector dataset is generated that contains 
 a single (new) vector map that links to as many time stamped attribute