Stock Chart API
Overview
Our Stock Chart API allows you to generate static PNG charts on demand, by passing in the following parameters
| param | description |
| General Params | |
| width | Total image (canvas) width in px |
| height | Total image (canvas) height in px |
| interval | Number of days back to show
|
| start | Starting date of chart
|
| end | Ending date of chart
|
| ticker | Comma-delimited list of stock symbols [1] |
| volume | Do/don't show supplementary volume graph [2]
|
| shwidth | Chart and footer box bg shadow/extrusion thickness in px |
| watermark | Name of prerendered watermark image to apply, minus .png suffix. It is presumed that the specified image already exists as a PNG file in the preconfigured watermark directory. |
| wmalpha | Watermark translucency in percent |
| Filled Area Charts Only | |
| fillalpha | Filled area chart translucency in percent [4] |
| fillshx | Area chart fill shadow x offset in px (positive = east) [4] |
| fillshx | Area chart fill shadow y offset in px (positive = south) [4] |
| fillsha | Area chart fill shadow alpha [4] |
| outputMode | Image output format |
| Colors
All colors are 24-bit RGB hex values in the form RRGGBB | |
| ibcolor | Canvas background color [3] |
| bgcolor | Price region background color |
| bvcolor | Volume region background color |
| arcolor | Filled area chart color, ignored if a gradient is used [4] |
| lncolor | Comma-delimited list of value line colors, corresponding to tickers |
| vocolor | Volume bar color if volume=1 |
| brcolor | Price & volume graph border & tick color |
| shcolor | Price & volume graph shadow/extrude color |
| grcolor | Price & volume graph grid line color (major) |
| gmcolor | Price & volume graph grid line color (minor) |
| mkcolor | Intraday chart previous close line color |
| txcolor | Text color for axis labels, attribution, etc., and tickers if legend is outside chart [5] |
| itcolor | Ticker symbol legend text color if legend is inside chart [5] |
| gtcolor | Filled area chart gradient color (top/left) [4] |
| gbcolor | Filled area chart gradient color (bottom/right) [4] |
| Notes | |
|
[1]
If multiple tickers are specified, values are rendered in terms
of performance (% gain/loss from starting point). The first
ticker is the "primary" ticker and will be rendered with any of
the specified fills, gradients, footer charts, etc., while all
additional tickers will be rendered as performance line overlays only.
[2] Specifying volume up/down colors (vucolor and vdcolor) will override this setting, effectively forcing it to 2. This setting will be further overridden to 0 if the ticker is an index or mutual fund (for which no volume data is available) [3] Since the "canvas" upon which the price and volume charts and their axis labels are drawn is normally transparent in order to allow the page background color to show through, this color only affects browsers that are incapable of properly rendering 32-bit PNG transparency, namely all versions of MSIE for Windows. The canvas will be drawn opaquely with this color on such browsers. [4] Only applies when type=0 (filled area chart)
[5] When the legend is positioned outside the chart price region, the ticker text color is txcolor. When it is inside the chart price region, the
ticker text color is itcolor (in order to preserve backward-compatability
with old URLs).
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