The meanings of and relationships between the parameters are:
If tvpe parameter is O (as specified or by default), SC defines antisotropic sealin,g;the first form of the command is assumed and the last two param- eters, l and bottotn.are ignored even if present; xmin, ]!rnin become the user coordinates of P 1, and xmax, )’ma.r,the coordinates of P2.
If t?ywparameter is 1, SC defines isotropic scaling; the first form of the command is assumed, and parameters leji and bottom (or defaults) are used;
.vnin, ymin become the user coordinates of point Q 1, and .mw, lmax, the user coordinates of point Q2, defined as follows:
●the rectangle whose diagonal is Q 1– Q2 is the largest which is contained in the rectangle whose diagonal is P1 – P2.
●if the plotter coordinates of Q 1 and Q2 are xq 1, yq 1 and xq2, yq2, then: (xql – xq2)/(xmin - xmax) = (yql - yq2)/(ymin - ymax)
●if the two rectangles do not coincide:
if abs(xql – xq2) = abs(xp 1 – xp2)
then, yql = yp 1 + bottorn/100 * abs(yq 1 – yq2) and left is disregarded
if abs(yq I – yq2) = abs(ypl – yp2)
then, xq 1 = xpl + left/100 Y abs(xq 1 – xq2) and bottom is disregarded
If type parameter is 2, SC defines
xmin + (xp2 – xp 1)/xfact, ymin + (yp2 – yp 1)/yfact
Without parameters, this command eliminates scaling and sets the user coordinate system to the plotter coordinate system.
If there are less than 4, exactly 6. or more than 7 parameters, this command is ignored.
If .rmin is the same as xmux, or if ymin is the same as ~max, or ifx~actor}~act is 0, the command is ignored.
When appropriate, the scaling defined by SC has priority over that obtained from the ratio: [size of picture frame]/[plot size]
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