SetXTickIncrement
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## SetXTickIncrement

SetXTickIncrement — Set the length of the interval between X ticks

## Synopsis

    $plot->SetXTickIncrement([$ti])

## Description

`SetXTickIncrement` sets the length of the interval between X tick marks (the tick increment, or tick step). You can use either this function or SetNumXTicks (but not both) to control the tick mark spacing.

## Parameters

`$ti`

  Desired tick increment, in world coordinates. If the value is omitted or an empty string, the default behavior is restored.

## Notes

If neither `SetXTickIncrement` nor SetNumXTicks is used, the tick interval is automatically calculated by PHPlot. See Section 4.6.7, “Automatic Tick Increment Calculation” for details.

## History

Before PHPlot-6.0.0, if neither the number of ticks nor the tick increment were specified, PHPlot calculated the tick increment as 1/10 of the X data range. Starting with PHPlot-6.0.0, a more complex algorithm is used which tries to produce 'natural' tick increments.

Starting with PHPlot-6.0.0, if you call both `SetNumXTicks` and `SetXTickIncrement`, the tick increment has priority and the specified number of ticks is ignored. Before PHPlot-6.0.0, the behavior was order-dependent: whichever function was used last had priority.

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