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What's the difference between HEAD^ and HEAD~ in Git?
...thor: Junio C Hamano <gitster@pobox.com>
Date: Mon Oct 29 10:15:31 2018 +0900
Merge branches 'bp/reset-quiet' and 'js/mingw-http-ssl' into nd/config-split […]
We can confirm the ordering by asking git rev-parse to show 89e4fcb0dd’s immediate parents in sequence.
$ git rev-parse 89...
What do hjust and vjust do when making a plot using ggplot?
... vjust=c(0, 0.5, 1),
angle=c(0, 45, 90),
text="text"
)
ggplot(td, aes(x=hjust, y=vjust)) +
geom_point() +
geom_text(aes(label=text, angle=angle, hjust=hjust, vjust=vjust)) +
facet_grid(~angle) +
scale_x_continuous(breaks=c(0, 0.5, 1), expand=c(0, 0.2)) +
scale_y_contin...
Change One Cell's Data in mysql
...something='some value';
And here's an example.
BEFORE
mysql> select aet,port from ae;
+------------+-------+
| aet | port |
+------------+-------+
| DCM4CHEE01 | 11112 |
| CDRECORD | 10104 |
+------------+-------+
2 rows in set (0.00 sec)
MAKING THE CHANGE
mysql> update ae s...
Add a common Legend for combined ggplots
...",header=TRUE)
library(ggplot2)
library(gridExtra)
p1 <- ggplot(df1, aes(x=x, y=y,colour=group)) + geom_point(position=position_jitter(w=0.04,h=0.02),size=1.8) + theme(legend.position="bottom")
p2 <- ggplot(df2, aes(x=x, y=y,colour=group)) + geom_point(position=position_jitter(w=0.04,h=0.0...
Printing everything except the first field with awk
...ise way:
$ awk '{$(NF+1)=$1;$1=""}sub(FS,"")' infile
United Arab Emirates AE
Antigua & Barbuda AG
Netherlands Antilles AN
American Samoa AS
Bosnia and Herzegovina BA
Burkina Faso BF
Brunei Darussalam BN
Explanation:
$(NF+1)=$1: Generator of a "new" last field.
$1="": Set the original first ...
How to fix the aspect ratio in ggplot?
...ata.frame(
x = runif(100, 0, 5),
y = runif(100, 0, 5))
ggplot(df, aes(x=x, y=y)) + geom_point() + coord_fixed()
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Intelligent point label placement in R
... y = y, z = ShortSci)
library(ggplot2)
library(ggrepel)
ggplot(data = df, aes(x = x, y = y)) + theme_bw() +
geom_text_repel(aes(label = z),
box.padding = unit(0.45, "lines")) +
geom_point(colour = "green", size = 3)
...
How do you Encrypt and Decrypt a PHP String?
...et, these are the steps you would have to take.
Encryption:
Encrypt using AES in CTR mode. You may also use GCM (which removes the need for a separate MAC). Additionally, ChaCha20 and Salsa20 (provided by libsodium) are stream ciphers and do not need special modes.
Unless you chose GCM above, you s...
How to plot two histograms together in R?
...mat already, you only need one line to make your plot.
ggplot(vegLengths, aes(length, fill = veg)) + geom_density(alpha = 0.2)
Now, if you really did want histograms the following will work. Note that you must change position from the default "stack" argument. You might miss that if you don't r...
What is the purpose of the -nodes argument in openssl?
...crypt private keys with idea
-seed encrypt private keys with seed
-aes128, -aes192, -aes256
encrypt PEM output with cbc aes
-camellia128, -camellia192, -camellia256
encrypt PEM output with cbc camellia
Ultimately at the library level OpenSSL calls the function P...