df.to.mat: Change xyz data-frame into a Z image
In andrewzm/EFDR: Wavelet-Based Enhanced FDR for Detecting Signals from Complete or Incomplete Spatially Aggregated Data
View source: R/EFDR_functions.R
df.to.mat R Documentation
Change xyz data-frame into a Z image
Description
Given a data frame with fields x, y and z, df.to.mat uses the x and
y coordinates to rearrange z into a rectangular matrix image Z.
Usage
df.to.mat(df)
Arguments
df
data frame with fields x, y and z
Details
This function requires that all pixels in the image are defined, that is df$x and df$y must be the
column outputs of the function expand.grid(x0,y0) where x0, y0 are axes values. Note that x0 and
y0 do not need to be regularly spaced.
Value
matrix image
Examples
df <- data.frame(expand.grid(1:10,1:10))
names(df) <- c("x","y")
df$z <- rnorm(nrow(df))
Z <- df.to.mat(df)
andrewzm/EFDR documentation built on Aug. 29, 2023, 7:03 a.m.
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View source: R/EFDR_functions.R
| df.to.mat | R Documentation |
Change xyz data-frame into a Z image
Description
Given a data frame with fields x, y and z, df.to.mat uses the x and
y coordinates to rearrange z into a rectangular matrix image Z.
Usage
df.to.mat(df)
Arguments
df |
data frame with fields |
Details
This function requires that all pixels in the image are defined, that is df$x and df$y must be the
column outputs of the function expand.grid(x0,y0) where x0, y0 are axes values. Note that x0 and
y0 do not need to be regularly spaced.
Value
matrix image
Examples
df <- data.frame(expand.grid(1:10,1:10))
names(df) <- c("x","y")
df$z <- rnorm(nrow(df))
Z <- df.to.mat(df)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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