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How to resize an image with OpenCV2.0 and Python2.6
...ze(image, (0,0), fx=0.5, fy=0.5)
and this will resize the image to have 100 cols (width) and 50 rows (height):
resized_image = cv2.resize(image, (100, 50))
Another option is to use scipy module, by using:
small = scipy.misc.imresize(image, 0.5)
There are obviously more options you can read...
How to find the array index with a value?
...
You can use indexOf:
var imageList = [100,200,300,400,500];
var index = imageList.indexOf(200); // 1
You will get -1 if it cannot find a value in the array.
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java : convert float to String and String to float
...
Float to string - String.valueOf()
float amount=100.00f;
String strAmount=String.valueOf(amount);
// or Float.toString(float)
String to Float - Float.parseFloat()
String strAmount="100.20";
float amount=Float.parseFloat(strAmount)
// or Float.valueOf(string)
...
Scatterplot with marginal histograms in ggplot2
...h of the ggplot objects:
hist_top <- ggplot()+geom_histogram(aes(rnorm(100)))
empty <- ggplot()+geom_point(aes(1,1), colour="white")+
theme(axis.ticks=element_blank(),
panel.background=element_blank(),
axis.text.x=element_blank(), axis.text.y=element_b...
How many GCC optimization levels are there?
...rpret the source code of GCC 5.1
We'll try to understand what happens on -O100, since it is not clear on the man page.
We shall conclude that:
anything above -O3 up to INT_MAX is the same as -O3, but that could easily change in the future, so don't rely on it.
GCC 5.1 runs undefined behavior if you...
UIViewContentModeScaleAspectFill not clipping
I'm trying to draw some thumbnail images at a fixed size (100x100) using UIImageView . I've set the frame size of my image view to be 100x100, and set the contentMode to UIViewContentModeScaleAspectFill .
...
What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
...DECLARE @T TABLE
(
C1 VARCHAR(20) COLLATE Chinese_Traditional_Stroke_Order_100_CS_AS_KS_WS,
C2 NVARCHAR(20)COLLATE Chinese_Traditional_Stroke_Order_100_CS_AS_KS_WS
)
INSERT INTO @T
VALUES (N'中华人民共和国',N'中华人民共和国'),
(N'abc',N'abc');
SELECT C1,
C2,
...
Set scroll position
...ollTop = 0;
el.scrollLeft = 0;
// To increment the scroll
el.scrollTop += 100;
el.scrollLeft += 100;
You can also mimic the window.scrollTo and window.scrollBy functions to all the existant HTML elements in the webpage on browsers that don't support it natively:
Object.defineProperty(HTMLElement...
With Mercurial, how can I “compress” a series of changesets into one before pushing?
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Yes, you can do it with patches:
Let's assume your work is in changesets 100 through 110, inclusive
Create a patch:
% hg export -o mypatch 100:110 --git
Update to 99:
% hg update 99
Apply the patch with --no-commit (otherwise you'll get all your changesets back):
% hg import --no-commit mypat...
How to do a scatter plot with empty circles in Python?
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Would these work?
plt.scatter(np.random.randn(100), np.random.randn(100), facecolors='none')
or using plot()
plt.plot(np.random.randn(100), np.random.randn(100), 'o', mfc='none')
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