No Animation with CloudDeploy[Manipulate[...]]

Questions
,
1

When you have a simple Manipulate like

Manipulate[Plot[Sin[x (1 + a x)], {x, 0, 6}], {{a, 1}, 0, 2, Appearance -> "Open"}]

you get a normal animated Manipulate. I.e. The a-Control has the animation buttons and the top menu contains AutoRun.

4538b1.png
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When you deploy that same code as an (unnamed) web application by

CloudDeploy[
 Manipulate[
  Plot[Sin[x (1 + a x)], {x, 0, 6}], {{a, 1}, 0, 2, 
   Appearance -> "Open"}]]

and call the URL the animation controls are missing and there is no way to animate the application

1881b2.png
1881b2.png570×426 8.48 KB

Does someone have an idea, what is wrong with that example and how I can get it animated?

2

Unfortunately I got no reaction to this post
Is it an unknown problem? Should I ask support?

3

Hi Werner,

Don’t know why the behavior is different. Should be reported to support. This works

CloudDeploy[
 Manipulate[Plot[Sin[x (1 + a x)], {x, 0, 6}], {{a, 1}, 0, 2, 
   ControlType -> Animator, Appearance -> "Open", AnimationRunning -> False}]]
4

Hi Rohit,
I know that it works with an Animator-control instead of a Manipulator-control. But there is no input field with Animator, hence you cannot set a particular a-value. (BTW.: The Appearance->“Open” is unnecessary with Animator).

So I try it with an additional control for a. This is a reasonable bypass for my problem:

Manipulate[Plot[Sin[x (1 + a x)], {x, 0, 6}], 
 Control[{{a, 1}, 0, 2, Animator, AnimationRunning -> False}], 
 Control[{{a, 1, ""}, InputField}]]

Anmerkung2020-08-05173137.png
Anmerkung2020-08-05173137.png932×373 10.9 KB

This works and when deployed it has the same controls.

CloudDeploy[
 Manipulate[Plot[Sin[x (1 + a x)], {x, 0, 6}], 
  Control[{{a, 1}, 0, 2, Animator, AnimationRunning -> False}], 
  Control[{{a, 1, ""}, InputField}]]]

CloudObject["https://www.wolframcloud.com/obj/90b72a4d-6efa-463c-99d4-\
f2222dc19e05"]

An even better solution might be a self-defined control with FormObject that defines an Animator with an input field. This is pretty tedious and I did not really try it.

5

I reported the question to support. Their final answer is:

“The absence of all of these buttons and controls related to animation or automatic progression of a Manipulate[] slider is intentional, as this functionality is not yet ready in the Wolfram Cloud”

To me, this explanation sounds a bit strange since the Animator-control works as one can see from above.

But I can live with it since I have the bypass mentioned (Animator-Control plus InputField-Control).