CY functions do not working

[Valentin]

Hi,

I am using cytoscape.js to place graph, provide an opportunity to change placement of nodes and save final coordinates of nodes. Nothings goes wrong until I try to call collection function, for example, cy.$('#j').position('x').

I used only examples from http://cytoscape.github.io/cytoscape.js/, but FireBug tells me that there is no such an element, or cy.elements() is not a function or something like that depending on function or element call. I included jquery and cytoscape.js in my html file where canvas is placed, so I see no aparent reason for such a mistake.

Can somebody help me?

Thank you!

[Max Franz]

Hi — No cy.js functions are available until the core emits the `ready` event.  You can call cy.elements() and cy.$() after `ready` (i.e. in a ready() callback):

$(‘#cy-div’).cytoscape({

  ready: function(){ /* calls in here */ },

  // other init options

});

// or outside of the init options

$('#cy-div’).cytoscape(function(){ // implicit ready, possibly in another file than init

  // call in here

});

See: http://cytoscape.github.io/cytoscape.js/#core/initialisation

-Max

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[Max Franz]

NB: You get the reference to `cy` within a ready callback, i.e.

$('#cy-div’).cytoscape(function(){ // implicit ready, possibly in another file than init

  cy = this;

  var jx = cy.$(‘#j’).position(‘x');

});

[Valentin]

Thank you very much, Max.

Now another question arose: can I call ready function after the time than graph was showed? I mean that I want to make interactive application which allows user to change nodes' placement and then simply push button like "Save placement" and the placement will be saved. It means that I need to get node's coordinates in any time, and as far as I understand, the ready function is called immediately after showing graph. Is there a way to implement it and how can it be done?

пятница, 10 января 2014 г., 19:18:01 UTC+4 пользователь Max Franz написал: