Displaying 2 results from an estimated 2 matches for "28data".
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20data
2008 Jul 18
0
Polynomial Approximation with Exponential Kernel
...erform the smoothing.
Limited information on how the algorithm is used in ArcGIS is located here:
http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=How%20Smooth%20Line%20(Data%20Management)%20works<http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=How%20Smooth%20Line%20%28Data%20Management%29%20works>
The reference to the original paper is:
Bodansky, Eugene; Gribov, Alexander; and Pilouk, Morakot, "Smoothing and
Compression of Lines Obtained by Raster-to-Vector Conversion", LNCS 2390,
Springer, p. 256-265, 2002.
I have a PDF copy of the paper that I can s...
2009 Jul 24
3
str(data.frame) after subsetting reflects original structure, not subsetted structure?
I find that after subsetting (you may prefer "conditional selection") a data
frame and assigning it to a new object, the str(new object) reflects the
original data frame, not the new one:
A <- rnorm(20)
B <- factor(rep(c("t", "g"), 10))
C <- factor(rep(c("h", "l"), 10))
D <- data.frame(A, B, C)
str(D) # reports correctly
E <-