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More details about Spectrum mousewheel in sdrgui documentation

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f4exb 2021-02-20 12:15:04 +01:00
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sdrgui/readme.md
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@ -973,7 +973,9 @@ Any change in the spectrum settings is not reflected in the markers. You have to
<h4>Mouse scroll wheel</h4> <h4>Mouse scroll wheel</h4>
<h5>Channel moving</h5> ![Spectrum Mousewheel](../doc/img/MainWindow_spectrum_mousewheel.png)
<h5>A: Channel moving</h5>
When the mouse is over the center line of a channel: When the mouse is over the center line of a channel:
@ -981,13 +983,13 @@ When the mouse is over the center line of a channel:
- combined with Ctrl it will move the channel by +/- 100 Hz - combined with Ctrl it will move the channel by +/- 100 Hz
- combined with Shift it will move the channel by +/- 1 kHz - combined with Shift it will move the channel by +/- 1 kHz
<h5>Frequency zooming</h5> <h5>B: Frequency zooming</h5>
When the mouse is in the spectrum area but not over the center line of a channel it will zoom in/out along X (frequency) axis by a 0.5 step at each scroll up/down respectively between 1x (no zoom) and 10x. Note that in order to zoom on the center line of a channel you may move the mouse pointer in the top margin (center line moving is not active there but zooming is). When the mouse is in the spectrum or waterfall area but not over the center line of a channel it will zoom in/out along X (frequency) axis by a 0.5 step at each scroll up/down respectively between 1x (no zoom) and 10x. Note that in order to zoom on the center line of a channel you may move the mouse pointer in the top margin (center line moving is not active there but zooming is).
When frequency zooming is active use Alt + left click to move the center frequency to the clicked point. When frequency zooming is active use Alt + left click to move the center frequency to the clicked point.
<h5>Power zooming</h5> <h5>C: Power zooming</h5>
When the mouse is inside the power scale (spectrum) the power range is decreased by 2 (zoom in) or increased by 2 (zoom in) at each wheel step forward or backward respectively. The behavior of the reference level depends on where in the scale is the mouse pointer: When the mouse is inside the power scale (spectrum) the power range is decreased by 2 (zoom in) or increased by 2 (zoom in) at each wheel step forward or backward respectively. The behavior of the reference level depends on where in the scale is the mouse pointer:
@ -995,7 +997,7 @@ When the mouse is inside the power scale (spectrum) the power range is decreased
- in the middle third: the reference level is decreased by 1 (zoom in) or increased by 1 (zoom out) at each wheel step forward or backward thus the level in the middle stays the same - in the middle third: the reference level is decreased by 1 (zoom in) or increased by 1 (zoom out) at each wheel step forward or backward thus the level in the middle stays the same
- in the bottom third: the reference level is decreased by 2 (zoom in) or increased by 2 (zoom out) at each wheel step forward or backward thus the level at the bottom stays the same - in the bottom third: the reference level is decreased by 2 (zoom in) or increased by 2 (zoom out) at each wheel step forward or backward thus the level at the bottom stays the same
<h5>Time zooming</h5> <h5>D: Time zooming</h5>
When the mouse is inside the time scale (waterfall) the overlap is increased by 1 (zoom in) or decreased by 1 (zoom out) at each wheel step forward or backward respectively. Overlap is bounded by 0 and half of the FFT size minus one. When the mouse is inside the time scale (waterfall) the overlap is increased by 1 (zoom in) or decreased by 1 (zoom out) at each wheel step forward or backward respectively. Overlap is bounded by 0 and half of the FFT size minus one.