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Generate a heatmap in MatPlotLib using a scatter data set
...as np
import numpy.random
import matplotlib.pyplot as plt
# Generate some test data
x = np.random.randn(8873)
y = np.random.randn(8873)
heatmap, xedges, yedges = np.histogram2d(x, y, bins=50)
extent = [xedges[0], xedges[-1], yedges[0], yedges[-1]]
plt.clf()
plt.imshow(heatmap.T, extent=extent, or...
How to determine an object's class?
...xception).
Possible ways summarized
Let's summarize the possible ways to test if an object obj is an instance of type C:
// Method #1
if (obj instanceof C)
;
// Method #2
if (C.class.isInstance(obj))
;
// Method #3
if (C.class.isAssignableFrom(obj.getClass()))
;
// Method #4
try {
...
How to check whether a string is a valid HTTP URL?
...
Try this to validate HTTP URLs (uriName is the URI you want to test):
Uri uriResult;
bool result = Uri.TryCreate(uriName, UriKind.Absolute, out uriResult)
&& uriResult.Scheme == Uri.UriSchemeHttp;
Or, if you want to accept both HTTP and HTTPS URLs as valid (per J0e3gan's ...
Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile
...to local maven repository (could in your user's home directory under /.m2)
test – unit tests are run
package – compiled sources are packaged into archive (JAR by default)
The 1.6 under tag refers to JDK version.
We need to ensure that proper jdk version in our dev environment or change the val...
How to use Git Revert
...e clear, with a log like this:
# git log --oneline
cb76ee4 wrong
01b56c6 test
2e407ce first commit
Using git revert cb76ee4 will by default bring your files back to 01b56c6 and will add a further commit to your history:
8d4406b Revert "wrong"
cb76ee4 wrong
01b56c6 test
2e407ce first commit
gi...
PreparedStatement with list of parameters in a IN clause [duplicate]
....size(); i++ ) {
builder.append("?,");
}
String stmt = "select * from test where field in ("
+ builder.deleteCharAt( builder.length() -1 ).toString() + ")";
PreparedStatement pstmt = ...
And then happily set the params
int index = 1;
for( Object o : possibleValue ) {
pstm...
How to get C# Enum description from value? [duplicate]
...
@tom: It may not be in the latest "released" version, but it's in the source: code.google.com/p/unconstrained-melody/source/browse/trunk/…
– Jon Skeet
Sep 14 '13 at 8:15
...
Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)
...
"Open in Browser context menu for HTML files" has been added in the latest build (2207). Its release date was 25 June 2012.
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Partial Commits with Subversion
...ng or modifying. Apply them to the original file using the patch command, test if the addition worked, then svn commit the addition.
Wash rinse repeat for the out.patch.modify patch.
If the changes are separate in the file as your initial question stated - added a new method, changed an existing ...
Travel/Hotel API's? [closed]
...d XML.
As you immediately access their API, you can start developing and testing, but still need their approval to launch the site, basically to make sure it provides the needed quality and security, which is reasonable.
They also offer "deep linking", i.e. you may customize your requests by addi...