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Usage of protocols as array types and function parameters in swift
...gt;(_ some: T) {
_x = { some.x }
}
}
// Usage Example
struct XY: X {
var x: Int
var y: Int
}
struct XZ: X {
var x: Int
var z: Int
}
let xy = XY(x: 1, y: 2)
let xz = XZ(x: 3, z: 4)
//let xs = [xy, xz] // error
let xs = [AnyX(xy), AnyX(xz)]
xs.forEach { print($0.x) } /...
Scatterplot with marginal histograms in ggplot2
...match is infinitesimally small. It's very easy to use the example provided xy <- data.frame(x=rnorm(300), y=rt(300,df=2) ) and use data=xy in the ggplot calls.
– IRTFM
Dec 17 '11 at 17:10
...
How can I use a batch file to write to a text file?
...
@echo off
(echo this is in the first line) > xy.txt
(echo this is in the second line) >> xy.txt
exit
The two >> means that the second line will be appended to the file (i.e. second line will start after the last line of xy.txt).
this is how the x...
ggplot2 plot without axes, legends, etc
...
xy <- data.frame(x=1:10, y=10:1)
plot <- ggplot(data = xy)+geom_point(aes(x = x, y = y))
plot
panel = grid.get("panel-3-3")
grid.newpage()
pushViewport(viewport(w=1, h=1, name="layout"))
pushViewport(viewport(w=1, h=1,...
How can I find a specific element in a List?
...
Use a lambda expression
MyClass result = list.Find(x => x.GetId() == "xy");
Note: C# has a built-in syntax for properties. Instead of writing getter and setter methods (as you might be used to from Java), write
private string _id;
public string Id
{
get
{
return _id;
}
...
Swift: Testing optionals for nil
...
In Xcode Beta 5, they no longer let you do:
var xyz : NSString?
if xyz {
// Do something using `xyz`.
}
This produces an error:
does not conform to protocol 'BooleanType.Protocol'
You have to use one of these forms:
if xyz != nil {
// Do something using `xyz...
matplotlib colorbar for scatter
...k for you?
import matplotlib.pyplot as plt
cm = plt.cm.get_cmap('RdYlBu')
xy = range(20)
z = xy
sc = plt.scatter(xy, xy, c=z, vmin=0, vmax=20, s=35, cmap=cm)
plt.colorbar(sc)
plt.show()
share
|
...
Possible to make labels appear when hovering over a point in matplotlib?
...plt.scatter(x,y,c=c, s=100, cmap=cmap, norm=norm)
annot = ax.annotate("", xy=(0,0), xytext=(20,20),textcoords="offset points",
bbox=dict(boxstyle="round", fc="w"),
arrowprops=dict(arrowstyle="->"))
annot.set_visible(False)
def update_annot(ind):
pos ...
Adding an arbitrary line to a matplotlib plot in ipython notebook
... arrow, i.e., a simple line, is one of them.
ax.annotate("",
xy=(0.2, 0.2), xycoords='data',
xytext=(0.8, 0.8), textcoords='data',
arrowprops=dict(arrowstyle="-",
connectionstyle="arc3, rad=0"),
)
In the documentation it says ...
How to remove all whitespace from a string?
So " xx yy 11 22 33 " will become "xxyy112233" . How can I achieve this?
9 Answers
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