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How to set size for local image using knitr for markdown?
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You can also read the image using png package for example and plot it like a regular plot using grid.raster from the grid package.
```{r fig.width=1, fig.height=10,echo=FALSE}
library(png)
library(grid)
img <- readPNG("path/to/your/i...
quick random row selection in Postgres
...he other answers.
To decide whether you want to use BERNULLI oder SYSTEM, read about the difference at http://blog.2ndquadrant.com/tablesample-in-postgresql-9-5-2/
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A more pretty/informative Var_dump alternative in PHP? [closed]
...after asking this, I've finally open sourced my version of var_dump, Kint. Read about it in the project page, or directly in github.
Here's a screenshot:
Sorry for the plug :)
EDIT: I'd just like to remind the commenters, that this is not a support forum, if you're having problems/want a feat...
Does a C# app track how long its been running?
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;) yeah, you can also jsut read out the time from the existing variable ;)
– TomTom
Jul 3 '12 at 20:01
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How can I bring my application window to the front? [duplicate]
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Take a read of the bullet point list of conditions that must apply for this to work.
– David Heffernan
Mar 12 '11 at 15:10
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how to convert milliseconds to date format in android?
...ould we receive time and date in this "/Date(1224043200000)/" format? I've read that its an old json format of microsoft and it should not be used in new development.
– Aldor
Jul 4 at 2:15
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Is there a git-merge --dry-run option?
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@Penz In my git v1.8.1.1 git-apply won't work. It must read git apply.
– yunzen
Feb 28 '13 at 9:46
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Is PHP compiled or interpreted?
...s of compilation cost and runtime performance. Lol, this is a rather old thread, just realized it.
– Groo
Dec 10 '12 at 18:16
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How do I check if file exists in jQuery or pure JavaScript?
...eIfFileExist(src, callback) {
var xhr = new XMLHttpRequest()
xhr.onreadystatechange = function() {
if (this.readyState === this.DONE) {
callback()
}
}
xhr.open('HEAD', src)
}
shar...
Convert Bitmap to File
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java.io.FileNotFoundException: /path: open failed: EROFS (Read-only file system)
– Prasad
Sep 11 '15 at 6:52
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