dygraphs

If provided, this function is called whenever the user clicks on an annotation.

If provided, this function is called whenever the user double-clicks on an annotation.

If provided, this function is called whenever the user mouses out of an annotation.

If provided, this function is called whenever the user mouses over an annotation.

Only applies when Dygraphs is used as a GViz chart. Causes string columns following a data series to be interpreted as annotations on points in that series. This is the same format used by Google's AnnotatedTimeLine chart.

Set to either 'y1' or 'y2' to assign a series to a y-axis (primary or secondary). Must be set per-series.

Color for x- and y-axis labels. This is a CSS color string.

Size of the font (in pixels) to use in the axis labels, both x- and y-axis.

Function to call to format the tick values that appear along an axis. This is usually set on a per-axis basis.

Width (in pixels) of the containing divs for x- and y-axis labels. For the y-axis, this also controls the width of the y-axis. Note that for the x-axis, this is independent from pixelsPerLabel, which controls the spacing between labels.

Color of the x- and y-axis lines. Accepts any value which the HTML canvas strokeStyle attribute understands, e.g. 'black' or 'rgb(0, 100, 255)'.

Thickness (in pixels) of the x- and y-axis lines.

The size of the line to display next to each tick mark on x- or y-axes.

Initially zoom in on a section of the graph. Is of the form [earliest, latest], where earliest/latest are milliseconds since epoch. If the data for the x-axis is numeric, the values in dateWindow must also be numbers.

When set, draw the X axis at the Y=0 position and the Y axis at the X=0 position if those positions are inside the graph's visible area. Otherwise, draw the axes at the bottom or left graph edge as usual.

Whether to draw the specified axis. This may be set on a per-axis basis to define the visibility of each axis separately. Setting this to false also prevents axis ticks from being drawn and reclaims the space for the chart grid/lines.

Deprecated. Use axes : { x : { drawAxis } }.

Deprecated. Use axes : { y : { drawAxis } }.

Usually, dygraphs will use the range of the data plus some padding to set the range of the y-axis. If this option is set, the y-axis will always include zero, typically as the lowest value. This can be used to avoid exaggerating the variance in the data

Only valid for y and y2, has no effect on x: This option defines whether the y axes should align their ticks or if they should be independent. Possible combinations: 1.) y=true, y2=false (default): y is the primary axis and the y2 ticks are aligned to the the ones of y. (only 1 grid) 2.) y=false, y2=true: y2 is the primary axis and the y ticks are aligned to the the ones of y2. (only 1 grid) 3.) y=true, y2=true: Both axis are independent and have their own ticks. (2 grids) 4.) y=false, y2=false: Invalid configuration causes an error.

Show date/time labels according to UTC (instead of local time).

When set for the y-axis or x-axis, the graph shows that axis in log scale. Any values less than or equal to zero are not displayed. Showing log scale with ranges that go below zero will result in an unviewable graph. Not compatible with showZero. connectSeparatedPoints is ignored. This is ignored for date-based x-axes.

A value representing the farthest a graph may be panned, in percent of the display. For example, a value of 0.1 means that the graph can only be panned 10% pased the edges of the displayed values. null means no bounds.

Number of pixels to require between each x- and y-label. Larger values will yield a sparser axis with fewer ticks. This is set on a per-axis basis.

This lets you specify an arbitrary function to generate tick marks on an axis. The tick marks are an array of (value, label) pairs. The built-in functions go to great lengths to choose good tick marks so, if you set this option, you'll most likely want to call one of them and modify the result. See dygraph-tickers.js for an extensive discussion. This is set on a per-axis basis.

Explicitly set the vertical range of the graph to [low, high]. This may be set on a per-axis basis to define each y-axis separately. If either limit is unspecified, it will be calculated automatically (e.g. [null, 30] to automatically calculate just the lower bound)

Height, in pixels, of the x-axis. If not set explicitly, this is computed based on axisLabelFontSize and axisTickSize.

Add the specified amount of extra space (in pixels) around the X-axis value range to ensure points at the edges remain visible.

If set, add the specified amount of extra space (in pixels) around the Y-axis value range to ensure points at the edges remain visible. If unset, use the traditional Y padding algorithm.

When set, parse each CSV cell as "low;middle;high". Error bars will be drawn for each point between low and high, with the series itself going through middle.

The delimiter to look for when separating fields of a CSV file. Setting this to a tab is not usually necessary, since tab-delimited data is auto-detected.

Does the data contain standard deviations? Setting this to true alters the input format (see above).

When set, attempt to parse each cell in the CSV file as "a/b", where a and b are integers. The ratio will be plotted. This allows computation of Wilson confidence intervals (see below).

A function which parses x-values (i.e. the dependent series). Must return a number, even when the values are dates. In this case, millis since epoch are used. This is used primarily for parsing CSV data. *=Dygraphs is slightly more accepting in the dates which it will parse. See code for details.

A function to call when the canvas is clicked.

When set, this callback gets called every time the dygraph is drawn. This includes the initial draw, after zooming and repeatedly while panning.

When set, this callback gets called every time a new point is highlighted.

A function to call when a data point is clicked. and the point that was clicked.

When set, this callback gets called before the chart is drawn. It details on how to use this.

When set, this callback gets called every time the user stops highlighting any point by mousing out of the graph.

A function to call when the zoom window is changed (either by zooming in or out).

Width (in pixels) of the containing divs for x- and y-axis labels. For the y-axis, this also controls the width of the y-axis. Note that for the x-axis, this is independent from pixelsPerLabel, which controls the spacing between labels.

Text to display above the chart. You can supply any HTML for this value, not just text. If you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-title' classes.

Height of the chart title, in pixels. This also controls the default font size of the title. If you style the title on your own, this controls how much space is set aside above the chart for the title's div.

Height of the x-axis label, in pixels. This also controls the default font size of the x-axis label. If you style the label on your own, this controls how much space is set aside below the chart for the x-axis label's div.

Text to display below the chart's x-axis. You can supply any HTML for this value, not just text. If you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-xlabel' classes.

Text to display to the right of the chart's secondary y-axis. This label is only displayed if a secondary y-axis is present. See this test for an example of how to do this. The comments for the 'ylabel' option generally apply here as well. This label gets a 'dygraph-y2label' instead of a 'dygraph-ylabel' class.

Width of the div which contains the y-axis label. Since the y-axis label appears rotated 90 degrees, this actually affects the height of its div.

Text to display to the left of the chart's y-axis. You can supply any HTML for this value, not just text. If you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-ylabel' classes. The text will be rotated 90 degrees by default, so CSS rules may behave in unintuitive ways. No additional space is set aside for a y-axis label. If you need more space, increase the width of the y-axis tick labels using the yAxisLabelWidth option. If you need a wider div for the y-axis label, either style it that way with CSS (but remember that it's rotated, so width is controlled by the 'height' property) or set the yLabelWidth option.

Defines per-axis options. Valid keys are 'x', 'y' and 'y2'. Only some options may be set on a per-axis basis. If an option may be set in this way, it will be noted on this page. See also documentation on per-series and per-axis options.

Defines per-graph plugins. Useful for per-graph customization

Custom DataHandler. This is an advanced customization. See http://bit.ly/151E7Aq.

Sets the data being displayed in the chart. This can only be set when calling updateOptions; it cannot be set from the constructor. For a full description of valid data formats, see the Data Formats page.

Usually, when Dygraphs encounters a missing value in a data series, it interprets this as a gap and draws it as such. If, instead, the missing values represents an x-value for which only a different series has data, then you'll want to connect the dots by setting this to true. To explicitly include a gap with this option set, use a value of NaN.

Draw points at the edges of gaps in the data. This improves visibility of small data segments or other data irregularities.

Draw a custom item when a point is highlighted. Default is a small dot matching the series color. This method should constrain drawing to within pointSize pixels from (cx, cy) Also see drawPointCallback

Draw a custom item when drawPoints is enabled. Default is a small dot matching the series color. This method should constrain drawing to within pointSize pixels from (cx, cy). Also see drawHighlightPointCallback

Draw a small dot at each point, in addition to a line going through the point. This makes the individual data points easier to see, but can increase visual clutter in the chart. The small dot can be replaced with a custom rendering by supplying a drawPointCallback.

Should the area underneath the graph be filled? This option is not compatible with error bars. This may be set on a per-series basis.

A function (or array of functions) which plot each data series on the chart. TODO(danvk): more details! May be set per-series.

The size of the dot to draw on each point in pixels (see drawPoints). A dot is always drawn when a point is "isolated", i.e. there is a missing point on either side of it. This also controls the size of those dots.

If set, stack series on top of one another rather than drawing them independently. The first series specified in the input data will wind up on top of the chart and the last will be on bottom. NaN values are drawn as white areas without a line on top, see stackedGraphNaNFill for details.

Controls handling of NaN values inside a stacked graph. NaN values are interpolated/extended for stacking purposes, but the actual point value remains NaN in the legend display. Valid option values are "all" (interpolate internally, repeat leftmost and rightmost value as needed), "inside" (interpolate internally only, use zero outside leftmost and rightmost value), and "none" (treat NaN as zero everywhere).

When set, display the graph as a step plot instead of a line plot. This option may either be set for the whole graph or for single series.

Color for the line border used if strokeBorderWidth is set.

Draw a border around graph lines to make crossing lines more easily distinguishable. Useful for graphs with many lines.

A custom pattern array where the even index is a draw and odd is a space in pixels. If null then it draws a solid line. The array should have a even length as any odd lengthed array could be expressed as a smaller even length array. This is used to create dashed lines.

The width of the lines connecting data points. This can be used to increase the contrast or some graphs.

Which series should initially be visible? Once the Dygraph has been constructed, you can access and modify the visibility of each series using the visibility and setVisibility methods.

A per-series color definition. Used in conjunction with, and overrides, the colors option.

If colors is not specified, saturation of the automatically-generated data series colors.

If colors is not specified, value of the data series colors, as in hue/saturation/value. (0.0-1.0, default 0.5)

List of colors for the data series. These can be of the form "#AABBCC" or "rgb(255,100,200)" or "yellow", etc. If not specified, equally-spaced points around a color wheel are used. Overridden by the 'color' option.

Error bars (or custom bars) for each series are drawn in the same color as the series, but with partial transparency. This sets the transparency. A value of 0.0 means that the error bars will not be drawn, whereas a value of 1.0 means that the error bars will be as dark as the line for the series itself. This can be used to produce chart lines whose thickness varies at each point.

Set this option to log timing information. The value of the option will be logged along with the timimg, so that you can distinguish multiple dygraphs on the same page.

Deprecated, please use yRangePad instead. When set, the heuristic that fixes the Y axis at zero for a data set with the minimum Y value of zero is disabled. This is particularly useful for data sets that contain many zero values, especially for step plots which may otherwise have lines not visible running along the bottom axis.

Use the per-axis option drawGrid instead. Whether to display vertical gridlines under the chart.

Use the per-axis option drawGrid instead. Whether to display horizontal gridlines under the chart.

Prefer axes { x: { pixelsPerLabel } }

Prefer axes: { y: { pixelsPerLabel } }

Prefer axes { x: { axisLabelFormatter } }

Prefer axes: { x: { axisLabelWidth } }

Prefer axes: { x: { valueFormatter } }

Prefer axes: { y: { axisLabelFormatter } }

Prefer axes { y: { axisLabelWidth } }

Prefer axes: { y: { valueFormatter } }

When set, parse each CSV cell as "low;middle;high". Error bars will be drawn for each point between low and high, with the series itself going through middle.

Does the data contain standard deviations? Setting this to true alters the input format (see above).

Error bars (or custom bars) for each series are drawn in the same color as the series, but with partial transparency. This sets the transparency. A value of 0.0 means that the error bars will not be drawn, whereas a value of 1.0 means that the error bars will be as dark as the line for the series itself. This can be used to produce chart lines whose thickness varies at each point.

When set, attempt to parse each cell in the CSV file as "a/b", where a and b are integers. The ratio will be plotted. This allows computation of Wilson confidence intervals (see below).

Number of days over which to average data. Discussed extensively above.

When errorBars is set, shade this many standard deviations above/below each point.

Use in conjunction with the "fractions" option. Instead of plotting +/- N standard deviations, dygraphs will compute a Wilson confidence interval and plot that. This has more reasonable behavior for ratios close to 0 or 1.

Whether to display gridlines in the chart. This may be set on a per-axis basis to define the visibility of each axis' grid separately.

Use the per-axis option drawGrid instead. Whether to display vertical gridlines under the chart.

Use the per-axis option drawGrid instead. Whether to display horizontal gridlines under the chart.

The color of the gridlines. This may be set on a per-axis basis to define each axis' grid separately.

A custom pattern array where the even index is a draw and odd is a space in pixels. If null then it draws a solid line. The array should have a even length as any odd lengthed array could be expressed as a smaller even length array. This is used to create dashed gridlines.

Thickness (in pixels) of the gridlines drawn under the chart. The vertical/horizontal gridlines can be turned off entirely by using the drawXGrid and drawYGrid options. This may be set on a per-axis basis to define each axis' grid separately.

Only valid for y and y2, has no effect on x: This option defines whether the y axes should align their ticks or if they should be independent. Possible combinations: 1.) y=true, y2=false (default): y is the primary axis and the y2 ticks are aligned to the the ones of y. (only 1 grid) 2.) y=false, y2=true: y2 is the primary axis and the y ticks are aligned to the the ones of y2. (only 1 grid) 3.) y=true, y2=true: Both axis are independent and have their own ticks. (2 grids) 4.) y=false, y2=false: Invalid configuration causes an error.

Number of pixels to require between each x- and y-label. Larger values will yield a sparser axis with fewer ticks. This is set on a per-axis basis.

Set this option to animate the transition between zoom windows. Applies to programmatic and interactive zooms. Note that if you also set a drawCallback, it will be called several times on each zoom. If you set a zoomCallback, it will only be called after the animation is complete.

Whether to hide the legend when the mouse leaves the chart area.

The size in pixels of the dot drawn over highlighted points.

Fade the background while highlighting series. 1=fully visible background (disable fading), 0=hiddden background (show highlighted series only).

When set, the options from this object are applied to the timeseries closest to the mouse pointer for interactive highlighting. See also 'highlightCallback'. Example: highlightSeriesOpts: { strokeWidth: 3 }.

TODO(konigsberg): document this

A value representing the farthest a graph may be panned, in percent of the display. For example, a value of 0.1 means that the graph can only be panned 10% pased the edges of the displayed values. null means no bounds.

A function to call when a data point is clicked. and the point that was clicked.

Height, in pixels, of the range selector widget. This option can only be specified at Dygraph creation time.

The range selector mini plot fill color. This can be of the form "#AABBCC" or "rgb(255,100,200)" or "yellow". You can also specify null or "" to turn off fill.

The range selector mini plot stroke color. This can be of the form "#AABBCC" or "rgb(255,100,200)" or "yellow". You can also specify null or "" to turn off stroke.

Mark this series for inclusion in the range selector. The mini plot curve will be an average of all such series. If this is not specified for any series, the default behavior is to average all the series. Setting it for one series will result in that series being charted alone in the range selector.

Whether to show the legend upon mouseover.

Show or hide the range selector widget.

If the rolling average period text box should be shown.

Whether to hide the legend when the mouse leaves the chart area.

A name for each data series, including the independent (X) series. For CSV files and DataTable objections, this is determined by context. For raw data, this must be specified. If it is not, default values are supplied and a warning is logged.

Show data labels in an external div, rather than on the graph. This value can either be a div element or a div id.

Additional styles to apply to the currently-highlighted points div. For example, { 'fontWeight': 'bold' } will make the labels bold. In general, it is better to use CSS to style the .dygraph-legend class than to use this property.

Width (in pixels) of the div which shows information on the currently-highlighted points.

Put <br/> between lines in the label string. Often used in conjunction with labelsDiv.

Show zero value labels in the labelsDiv.

When to display the legend. By default, it only appears when a user mouses over the chart. Set it to "always" to always display a legend of some sort. When set to "follow", legend follows highlighted points.

Whether to show the legend upon mouseover.

Function to provide a custom display format for the values displayed on mouseover. This does not affect the values that appear on tick marks next to the axes. To format those, see axisLabelFormatter. This is usually set on a per-axis basis. .

Height, in pixels, of the chart. If the container div has been explicitly sized, this will be ignored.

Number of pixels to leave blank at the right edge of the Dygraph. This makes it easier to highlight the right-most data point.

Width, in pixels, of the chart. If the container div has been explicitly sized, this will be ignored.

Number of days over which to average data. Discussed extensively above.

If the rolling average period text box should be shown.

Defines per-series options. Its keys match the y-axis label names, and the values are dictionaries themselves that contain options specific to that series. When this option is missing, it falls back on the old-style of per-series options comingled with global options.

Unless it's run in scientific mode (see the sigFigs option), dygraphs displays numbers with digitsAfterDecimal digits after the decimal point. Trailing zeros are not displayed, so with a value of 2 you'll get '0', '0.1', '0.12', '123.45' but not '123.456' (it will be rounded to '123.46'). Numbers with absolute value less than 0.1^digitsAfterDecimal (i.e. those which would show up as '0.00') will be displayed in scientific notation.

Show K/M/B for thousands/millions/billions on y-axis.

Show k/M/G for kilo/Mega/Giga on y-axis. This is different than labelsKMB in that it uses base 2, not 10.

Show date/time labels according to UTC (instead of local time).

When displaying numbers in normal (not scientific) mode, large numbers will be displayed with many trailing zeros (e.g. 100000000 instead of 1e9). This can lead to unwieldy y-axis labels. If there are more than maxNumberWidth digits to the left of the decimal in a number, dygraphs will switch to scientific notation, even when not operating in scientific mode. If you'd like to see all those digits, set this to something large, like 20 or 30.

By default, dygraphs displays numbers with a fixed number of digits after the decimal point. If you'd prefer to have a fixed number of significant figures, set this option to that number of sig figs. A value of 2, for instance, would cause 1 to be display as 1.0 and 1234 to be displayed as 1.23e+3.

Function to provide a custom display format for the values displayed on mouseover. This does not affect the values that appear on tick marks next to the axes. To format those, see axisLabelFormatter. This is usually set on a per-axis basis. .

When this option is passed to updateOptions() along with either the dateWindow or valueRange options, the zoom flags are not changed to reflect a zoomed state. This is primarily useful for when the display area of a chart is changed programmatically and also where manual zooming is allowed and use is made of the isZoomed method to determine this.