Nothing
## =============================================================================
## Functions for drawing circuit elements
## =============================================================================
tpos <- function(mid,
pos,
dtext = 0.2) {
pp <- mid
dtext.x <- dtext.y <- dtext # change for nonsymmetric plots
adj <- c(0.5, 0.5)
if (pos == 0) {
pp <- mid
adj <- c(0.5, 0.5)
} else if (pos == 1) {
pp <- mid - c(0, dtext)
adj <- c(0.5, 0)
} else if (pos == 1.5) {
pp <- mid - c(dtext, dtext/2)
adj <- c(0, 1)
} else if (pos == 2) {
pp <- mid - c(dtext.x, 0)
adj <- c(0, 0.5)
}else if (pos == 2.5) {
pp <- mid + c(-dtext.x, dtext.y/2)
adj <- c(0, 0)
} else if (pos == 3) {
pp <- mid + c(0, dtext.y)
adj <- c(0.5, 1)
}else if (pos == 3.5) {
pp <- mid + c(dtext.x, dtext.y/2)
adj <- c(1, 0)
} else if (pos == 4) {
pp <- mid + c(dtext.x, 0)
adj <- c(1, 0.5)
}else if (pos == 4.5) {
pp <- mid + c(dtext.x, -dtext.y/2)
adj <- c(1, 1)
}
list (x = pp[1], y = pp[2], adj = adj)
} # end of tpos
## -----------------------------------------------------------------------------
en.Resistor <- function (mid,
width = 0.05, # the width of the resistor
length = 0.1, # the length of the resistor
lab = NULL, # the label
pos = 0, # relative position (shift)
dtext = 0., # shift in x-y- coordinates for text
vert = TRUE,
...) {
if ( vert)
rect(mid[1] - width/2, mid[2] - length/2,
mid[1] + width/2, mid[2] + length/2, col = "white")
else
rect(mid[1] - length/2, mid[2] - width/2,
mid[1] + length/2, mid[2] + width/2, col = "white")
if (! is.null(lab)) {
pp <- tpos(mid, pos, dtext = dtext)
text(pp$x, pp$y, lab = lab, adj = pp$adj, ...)
}
}
## -----------------------------------------------------------------------------
en.Capacitator <- function (mid,
width = 0.025,
length = 0.1,
lab = NULL,
pos = 2.5,
dtext = 0.04,
vert = TRUE,
...) {
if (! vert) {
rect(mid[1] - width/2, mid[2] - length/2,
mid[1] + width/2, mid[2] + length/2,
col = "white", border = NA)
segments(mid[1] - width/2, mid[2] - length/2,
mid[1] - width/2, mid[2] + length/2,
lwd = 2)
segments(mid[1] + width/2, mid[2] - length/2,
mid[1] + width/2, mid[2] + length/2,
lwd = 2)
} else {
rect(mid[1] - length/2, mid[2] - width/2,
mid[1] + length/2, mid[2] + width/2,
col = "white", border = NA)
segments(mid[1] - length/2, mid[2] - width/2,
mid[1] + length/2, mid[2] - width/2,
lwd = 2)
segments(mid[1] - length/2, mid[2] + width/2,
mid[1] + length/2, mid[2] + width/2,
lwd = 2)
}
if (! is.null(lab)) {
pp <- tpos(mid, pos, dtext = dtext)
text(pp$x, pp$y, lab = lab, adj = pp$adj, ...)
}
}
## -----------------------------------------------------------------------------
en.Node <- function (mid,
cex = 1,
lab = NULL,
pos = 2.5,
dtext = 0.025,
...) {
points(mid[1], mid[2], cex = cex, pch = 16, ...)
if (! is.null(lab)) {
pp <- tpos(mid, pos, dtext = dtext)
text(pp$x, pp$y, lab = lab, adj = pp$adj, ...)
}
}
## -----------------------------------------------------------------------------
en.Amplifier <- function (mid,
r = 0.05,
lab = NULL,
pos = 0,
dtext = 0,
...) {
plotcircle(mid = mid, r = r)
segments(mid[1], mid[2] - r/2,
mid[1], mid[2] + r/2)
if (! is.null(lab)) {
pp <- tpos(mid, pos, dtext = dtext)
text(pp$x, pp$y, lab, cex = pp$adj, ...)
}
}
## -----------------------------------------------------------------------------
en.Transistor <- function (mid, gate, drain, source,
r = 0.05,
lab = NULL,
pos = 0,
dtext = 0,
...) {
segments(gate[1], gate[2], mid[1], mid[2])
segments(drain[1], drain[2], mid[1], mid[2])
segments(source[1], source[2], mid[1], mid[2])
en.Amplifier(mid=mid, r = r, lab = lab, pos = pos, dtext = dtext)
}
## -----------------------------------------------------------------------------
en.Signal <- function (mid,
r = 0.03,
lab = NULL,
pos = 0,
dtext = 0.025,
...) {
user <- par("usr")
pin <- par("pin")
sy <- user[4] - user[3]
sx <- user[2] - user[1]
ry <- r * sy/sx * pin[1]/pin[2]
textellipse (mid=mid, radx = r, rady = ry, lab = "")
if (! is.null(lab)) {
pp <- tpos(mid, pos, dtext = dtext)
text(pp$x, pp$y,lab, adj = pp$adj...)
}
}
## -----------------------------------------------------------------------------
en.Ground <- function (mid,
width = 0.075,
length = 0.1,
n = 4,
dx = 0.2,
...) {
pp <- mid[2] - length/(n+1)
segments(mid[1], mid[2], mid[1], pp)
for (i in 1:n) {
ww <- width/2 * (1-(i-1) * dx)
segments(mid[1] - ww, pp, mid[1] + ww, pp)
pp <- pp - length/(n+1)
}
}
enResistor <- function (...) en.Resistor(...)
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.