plenv0: Same as plenv but if in multiplot mode does not advance the subpage, instead clears it.

The PLplot Plotting Library: Programmer's Reference Manual
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### `plenv0`: Same as `plenv` but if in multiplot mode does not advance the subpage, instead clears it.

`plenv0` (xmin, xmax, ymin, ymax, just, axis);

Sets up plotter environment for simple graphs by calling `pladv` and setting up viewport and window to sensible default values. `plenv0` leaves enough room around most graphs for axis labels and a title. When these defaults are not suitable, use the individual routines `plvpas`, `plvpor`, or `plvasp` for setting up the viewport, `plwind` for defining the window, and `plbox` for drawing the box.

`xmin` (`PLFLT`, input) Value of x at left-hand edge of window (in world coordinates). `xmax` (`PLFLT`, input) Value of x at right-hand edge of window (in world coordinates). `ymin` (`PLFLT`, input) Value of y at bottom edge of window (in world coordinates). `ymax` (`PLFLT`, input) Value of y at top edge of window (in world coordinates). `just` (`PLINT`, input) Controls how the axes will be scaled: `-1`: the scales will not be set, the user must set up the scale before calling `plenv0` using `plsvpa`, `plvasp` or other. `0`: the x and y axes are scaled independently to use as much of the screen as possible. `1`: the scales of the x and y axes are made equal. `2`: the axis of the x and y axes are made equal, and the plot box will be square. `axis` (`PLINT`, input) Controls drawing of the box around the plot: `-2`: draw no box, no tick marks, no numeric tick labels, no axes. `-1`: draw box only. `0`: draw box, ticks, and numeric tick labels. `1`: also draw coordinate axes at `x=0` and `y=0`. `2`: also draw a grid at major tick positions in both coordinates. `3`: also draw a grid at minor tick positions in both coordinates. `10`: same as 0 except logarithmic `x` tick marks. (The `x` data have to be converted to logarithms separately.) `11`: same as 1 except logarithmic `x` tick marks. (The `x` data have to be converted to logarithms separately.) `12`: same as 2 except logarithmic `x` tick marks. (The `x` data have to be converted to logarithms separately.) `13`: same as 3 except logarithmic `x` tick marks. (The `x` data have to be converted to logarithms separately.) `20`: same as 0 except logarithmic `y` tick marks. (The `y` data have to be converted to logarithms separately.) `21`: same as 1 except logarithmic `y` tick marks. (The `y` data have to be converted to logarithms separately.) `22`: same as 2 except logarithmic `y` tick marks. (The `y` data have to be converted to logarithms separately.) `23`: same as 3 except logarithmic `y` tick marks. (The `y` data have to be converted to logarithms separately.) `30`: same as 0 except logarithmic `x` and `y` tick marks. (The `x` and `y` data have to be converted to logarithms separately.) `31`: same as 1 except logarithmic `x` and `y` tick marks. (The `x` and `y` data have to be converted to logarithms separately.) `32`: same as 2 except logarithmic `x` and `y` tick marks. (The `x` and `y` data have to be converted to logarithms separately.) `33`: same as 3 except logarithmic `x` and `y` tick marks. (The `x` and `y` data have to be converted to logarithms separately.)

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`plend1`: End plotting session for current stream | Up | `plenv`: Set up standard window and draw box