X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=docs%2Findex.html;h=9e652b5e1dcc2cc290fd51e786631258c0bcbf77;hb=dcb25130b93f7d1ca126c01fb90f1b1aa413c54d;hp=bf183150b49207edb5a2f7631e13384b95fc2f8f;hpb=bf5b5f4d1fcf098d97a596749ef662b5f8649c72;p=dygraphs.git diff --git a/docs/index.html b/docs/index.html index bf18315..9e652b5 100644 --- a/docs/index.html +++ b/docs/index.html @@ -19,23 +19,34 @@
  • Baseball chart
  • Stock chart
  • Options Reference
  • +
  • GWT Compatibility
  • Data Policy
  • +

    Features

    + +

    Project

    Gallery

    @@ -109,10 +122,11 @@ +

    Determining Zoom

    + +

    + It is possible to detect whether a chart has been zoomed in either axis by the use of the isZoomed function. + If called with no argument, it will report whether either axis has been zoomed. + Alternatively it can be called with an argument of either 'x' or 'y' and it will report the status of just that axis. +

    + +

    Here's a simple example using drawCallback to display the various zoom states whenever the chart is zoomed:

    + +
    OUTPUT
    +
    +
    +

    Zoomed: False

    +

    Zoomed X: False

    +

    Zoomed Y: False

    +

    +
    +
    + +
    +
    + +

    +

    HTML
    + +
    +  new Dygraph(
    +
    +    // containing div
    +    document.getElementById("zoomdiv"),
    +
    +    // CSV or path to a CSV file.
    +    "Date,Temperature\n" +
    +    "2011-01-07,75\n" +
    +    "2011-01-08,70\n" +
    +    "2011-01-09,90\n" +
    +    "2011-01-10,30\n" +
    +    "2011-01-11,40\n" +
    +    "2011-01-12,60\n" +
    +    "2011-01-13,70\n" +
    +    "2011-01-14,40\n",
    +    {
    +      drawCallback: function(me, initial) {
    +        document.getElementById("zoomed").innerHTML = "" + me.isZoomed();
    +        document.getElementById("zoomedX").innerHTML = "" + me.isZoomed("x");
    +        document.getElementById("zoomedY").innerHTML = "" + me.isZoomed("y");
    +      }
    +    }
    +  );
    +
    +

    + +

    The Tests for zoom operations show a full example of this in action.

    + +

    Programmatic Zoom

    +

    + When a chart is programmatically zoomed by updating either the dateWindow + or valueRange option, by default the zoomed flags are also updated correspondingly. + It is possible to prevent this by specifying the noZoomFlagChange in the same + call to the updateOptions method. +

    +

    + The no-zoom-change test shows this in operation. +

    +

    One last demo

    This chart shows monthly closes of the Dow Jones Industrial Average, both in nominal and real (i.e. adjusted for inflation) dollars. The shaded areas show its monthly high and low. CPI values with a base from 1982-84 are used to adjust for inflation.

    @@ -436,9 +548,38 @@ new Dygraph(el, data, { + +