Hello,
As Stéphane said, using a tag and findobj is a possibility that I use
for complex layouts.
Here is another one: build your own vector of handles that you order the
way you want:
as=[];
subplot(221)
plot(1,2)
as=[as,gca()]
subplot(222)
plot(1:2,2:3)
as=[as,gca()]
subplot(223)
plot(2*[1:2],2:3)
as=[as,gca()]
subplot(224)
plot(2*[1:2],-[2:3])
as=[as,gca()]
as.foreground=color('gray');
as.background=color('lightgray');
as.thickness=2;
as.font_size=4;
Cheers,
Antoine
Le 09/04/2019 à 08:30, P M a écrit :
Federico...thanks for asking the question.
I was wondering about it myself for quite some time.
Once recognizing the fact, I just accepted that new entities are
placed at the first position.
However, it might be interesting to get some insight of why it is like
this....for now I guessed it has to do with how to handle memory.
Philipp
Am Mo., 8. Apr. 2019 um 23:01 Uhr schrieb Stéphane Mottelet
<stephane.motte...@utc.fr <mailto:stephane.motte...@utc.fr>>:
Le 08/04/2019 à 22:56, Federico Miyara a écrit :
Stéphane,
Sometimes one just needs to extract some parameter from an entity
and indexing is a valid way to access it.
So what is your problem since you know that the order of entities
is, though not natural, reproductible ? If you really need to
recover a deeply hidden entity, use tags and the findobj() function.
S.
Federico
On 08/04/2019 12:18, Stéphane Mottelet wrote:
Hello,
Le 07/04/2019 à 10:13, Federico Miyara a écrit :
Dear all,
I would like to know if there is a reason for the fact that
whenever new graphic objects are added to an axes, the last one
that has been created is always the one with index 1 instead of
n+1 (where n is the number of objects prior to new one).
Example:
scf(1)
clf(1)
// Plot a simple two-point graph
plot2d([0, 1], [0, 1])
ax = gca()
// Colect plotted data
a = ax.children(1).children.data
// Plot a simple two-point graph
plot2d([0, 1],[0.5, 1.5])
// Colect plotted data corresponding to index 1
b = ax.children(1).children.data
// Colect plotted data corresponding to index 2
c = ax.children(2).children.data
After the first plot we get
a =
0. 0.
1. 1.
After the second plot we get
b =
0. 0.5
1. 1.5
c =
0. 0.
1. 1.
I would expect that b = a, i.e, once a children object has been
created on the axes, it would be reasonable that its index were
kept constant. The current behavior is as if each new object
were inserted in the structure before the previous one instead
of after it.
I would say that the set of children is a stack, i.e. each new
child is "pushed" on top. Anyway, relying on child order seems,
to me, a bad idea. For example, legend takes as (optional) first
argument an array of handles, and not an array of child numbers.
S.
Regards,
Federico Miyara
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