Scatter Plot java.lang.IndexOutOfBoundsException: Index: 1, Size: 1

[Srirama Bhamidipati]

Hi,

I am trying to draw a scatterplot between two lists. As I am doing scatter plots for the first time, for now, I have kept the both lists the same variable so that I can see a more or less 45 degree straight line. But, I get an error :-  java.lang.IndexOutOfBoundsException: Index: 1, Size: 1

Here is the code

chart "DataScatter" type:scatter

{

data "people" value:(list(road) collect each.ADT) color: °red line_visible:false;

data "goods" value:(list(road) collect each.ADT)  color: °green line_visible:false;

}

Road is a species and has a float variable ADT. ADT is calculated in a global reflex. I do not understand why is it out of bounds.

please guide, thanks

Srirama

[Philippe Caillou]

Hi,

For a scatter plot, each value should be a point (or a list with two floats).

so something like that should work: (i just tested a similar thing with ants models) 

chart "DataScatter" type:scatter

{

data "goods" value:(list(road) collect {each.ADT,each.ADT})  color: °green line_visible:false;

}

Philippe

2014-05-08 17:21 GMT+02:00 Srirama Bhamidipati <b.sr...@gmail.com>:

Hi,

I am trying to draw a scatterplot between two lists. As I am doing scatter plots for the first time, for now, I have kept the both lists the same variable so that I can see a more of less 45 degree straight line. But, I get an error :-  java.lang.IndexOutOfBoundsException: Index: 1, Size: 1

Here is the code

chart "DataScatter" type:scatter

{

data "people" value:(list(road) collect each.ADT) color: °red line_visible:false;

data "goods" value:(list(road) collect each.ADT)  color: °green line_visible:false;

}

Road is a species and has a float variable ADT. ADT is calculated in a global reflex. I do not understand why is it out of bounds.

please guide, thanks

Srirama

--
You received this message because you are subscribed to the Google Groups "GAMA" group.
To unsubscribe from this group and stop receiving emails from it, send an email to gama-platfor...@googlegroups.com.
To post to this group, send email to gama-p...@googlegroups.com.
Visit this group at http://groups.google.com/group/gama-platform.
For more options, visit https://groups.google.com/d/optout.

[Alexis Drogoul]

Hi,

Maybe we could add a test on the type of the value passed to the facet value: (either in a validator, where you test both the type of plot and the type of the expression, or at runtime) ? In that way, we could avoid having this difficult-to-interpret error.

Cheers
Alexis

--
Senior Researcher, UMI UMMISCO 209, IRD & UPMC, France.
Invited Researcher, DREAM, Can Tho University, Viet Nam.
--
alexis....@gmail.com | http://tiny.cc/liqemw
[Vietnam] +84915088155 [France] +33608698845
--
GAMA: https://code.google.com/p/gama-platform/

[Philippe Caillou]

Hi,

Good idea, I just added a GamaRuntimeException (just discovered those, very useful!).

It would (perhaps?) be difficult to throw a warning in the editor since the value type constraints depends on the chart type (and it is possible to have points and list of points).

Philippe

[Alexis Drogoul]

Well, you should have a look at the IValidator interface and how it can be used (and how it is actually used) in such cases (basically, your data statement description can gather the enclosing description — chart —, verify its type — getFacets().get(…) — and verify the type of the value of its own facet value:

If you tell me exactly the rules to enforce, I can give you a draft of this validator.

Cheers
Alexis

[Philippe Caillou]

I never used IValidator either... A good way to learn!

Basically, the rule should be:

For the Data statement (I will do the Datalist from there):

If the Chart statement has a IKeyword.TYPE facet that is IKeyword.XY or IKeyword.SCATTER,

Then the IKeyword.VALUE facet value should be :

a point, or a list of points, or a list of list of numbers

Thanks!

Philippe

2014-05-08 19:06 GMT+02:00 Alexis Drogoul <alexis....@gmail.com>:

Well, you should have a look at the IValidator interface and how it can be used (and how it is actually used) in such cases (basically, your data statement description can gather the enclosing description -- chart --, verify its type -- getFacets().get(...) -- and verify the type of the value of its own facet value: