Revision 96629c37
Added by Jim Regetz over 13 years ago
- ID 96629c3791b63f3b8c5d4b40e11f947be2f2da02
| terrain/dem/dem-assessment.R | ||
|---|---|---|
| 260 | 260 |
xlab="SRTM elevation (m)", ylab="ASTER elevation (m)", cex=0.5) |
| 261 | 261 |
abline(median(delta.vals), 1, col="red", cex=0.5) |
| 262 | 262 |
abline(0, 1, col="blue", lty=2, cex=0.5) |
| 263 |
# add inset histogram of differences |
|
| 264 |
opar <- par(fig=c(0.55, 0.95, 0.1, 0.6), new=TRUE) |
|
| 265 |
h <- hist(delta.vals[abs(delta.vals)<60], breaks=48, xlab=NA, main=NULL, |
|
| 266 |
col=grey(0.8), border=grey(0.3), yaxt="n", ylab=NA, cex.axis=0.5, |
|
| 267 |
cex.lab=0.5, tcl=-0.25, mgp=c(3,0,0)) |
|
| 268 |
text(10, 0.4*max(h$counts), labels=paste("Entire range:\n(",
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|
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min(delta.vals), ", ", max(delta.vals), ")", sep=""), cex=0.6, |
|
| 270 |
adj=c(0,0)) |
|
| 271 |
mtext("SRTM-ASTER (m)", side=1, cex=0.5, line=0.6)
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|
| 263 | 272 |
dev.off() |
| 264 | 273 |
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| 265 | 274 |
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Also available in: Unified diff
added histogram plot of ASTER-SRTM differences