Value sliders are the small windows, which allows one to control value of the single variable using a slider (horizontal scroll box). The changes are immediately applied to all open windows, so – for example – one may observe, how the graphs are reflecting to changes of a variable used as their parameter.

Adding a value slider

To add a value slider, choose the Add value slider command from the main window menu. The following dialog window will appear:

You may enter the boundaries (minimal and maximal value) of the slider, as well as a count of steps. For example, if you set the boundaries to 0.0 and 1.0 and the number of steps to 11, the slider will reach the values of 0.0, 0.1, 0.2, …, 0.8, 0.9, 1.0.

You should also set the new value of the variable, such that slider can be correctly positioned, when the value slider window is opened. The new variable value will be set immediately after closing the value slider dialog window.

Using the value slider

To use the value slider, just drag the slider. The new value of variable will be set immediately and applied to all opened windows (main window, 2d graphs, 3d graphs and even another value sliders – if set to the same variable).

ProCalc - value slider

The value slider itself reflects to the variable value changes too. If the new value is inside slider’s boundaries, the slider is repositioned to match the new value. However, if the value is outside the boundaries or if its type can’t be displayed as a value slider (for example the value is a matrix or complex value), slider will change appearance:

ProCalc - value slider invalid

If you click the button, the value of the variable will be restored to the last value, which was supported by the slider and the slider will appear again.

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