Re: Add data labels within the Plot lists

Posted by Fred Damen on Mar 14, 2019; 11:55pm
URL: http://imagej.273.s1.nabble.com/Add-data-labels-within-the-Plot-lists-tp5021900p5021906.html

Greetings,

Thanks for the reply, but these are not the case that I was referring to.
What I was referring to was within a list of Xn,Yn values one, or more, of the
Yn cells, that have values in the corresponding Xn cells, have blank cells,
i.e.,

"X0","Y0"
0,1
1,""
2,5

Cases in which are NaN did/do get displayed as "NaN".  As my y-values deal
with taking the log of fractional numbers, I just assumed that these blank
values where negative infinity and kept on debugging.  I just wrote a test
plugin and the infinity values get displayed as you pointed out. So there is
some other value that is getting displayed as a blank.  When I see the issue
again, i will try and determine what the value is...

Thanks,

Fred


On Thu, March 14, 2019 3:00 pm, Michael Schmid wrote:

> Hi Fred,
>
> The tables created by Plots have blank entries at the end if the data
> array is shorter than the length of the table.
> [Technically, these are actually empty Strings, which have a numerical
> "NaN" value hidden behind them.  Any numerical functions such as
> Table.get and "Apply Macro" use the NaN; subsequent plotting of the data
> in the table simply omits the NaN points].
>
> You get these empty cells when you plot arrays of different length.
> Plots created by Analyze>Tools>Curve Fitting are a typical example.
>
>
> ResultsTables show NaN as "NaN" and +/-Infinity as "Infinity" or
> "+Infinity".
> Try this macro:
>
>    Table.create();
>    Table.set("a", 0, NaN);
>    Table.set("b", 0, 1e200*1e200);
>    Table.set("c", 0, -1e200*1e200);
>    Table.update;
>
> This is also true for plots (I tried a curve fit creating infinity
> values and listing the data).
>
>
> Michael
> ________________________________________________________________
> On 14.03.19 19:06, Fred Damen wrote:
>> Greetings,
>>
>> I find this useful, as the only time I click 'List' on the plot window is to
>> debug the plot.  There are cases in which a plot point is listed with a
>> blank
>> y-value.  I assume this is + or - infinity as I believe that the only other
>> non-printable number in NaN.  It would be useful for debugging to have the
>> value explicitly stated, even if on an array that is short.
>>
>> Thanks,
>>
>> Fred
>>
>> On Thu, March 14, 2019 8:14 am, Philippe CARL wrote:
>>> Dear all (probably mostly Michael and/or Wayne),
>>> What do you think about adding labels for the data within the plots so that
>>> when you list the plot data there is the possibility to not anymore read:
>>> X0
>>> Y0, Y1,… but instead attributed data names.
>>> This could for example be done by extending the "Plot.add(type, xValues,
>>> yValues)" method by something like "Plot.add(type, xValues, yValues, "Data
>>> name")".
>>> And a method "Plot.setLegend()" could as well be added.
>>> Indeed, in the case there is only 1 to 3 data sets the way the code is now
>>> is in not an issue, but with more data it becomes easily difficult to
>>> understand and interpret the listed data.
>>> Also do you see any issue which could limit or prohibit such an update?
>>> If not I could generate the needed code and submit it to you guys for
>>> validation.
>>> Bien cordialement,
>>> Philippe
>>>
>>> Philippe CARL
>>> Laboratoire de Bioimagerie et Pathologies
>>> UMR 7021 CNRS - Université de Strasbourg
>>> Faculté de Pharmacie
>>> 74 route du Rhin
>>> 67401 ILLKIRCH
>>> Tel : [phone]
>>>
>>> --
>>> ImageJ mailing list: http://imagej.nih.gov/ij/list.html
>>>
>>
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