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use Winmerge inside of Git to file diff
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113
Update June 2015, 6 years later:
As detailed in "git mergetool winmerge", a simple git config...
CSS3 Transparency + Gradient
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edited Jun 16 '12 at 16:08
umassthrower
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Relative frequencies / proportions with dplyr
...se(n = n()) %>%
mutate(freq = n / sum(n))
# am gear n freq
# 1 0 3 15 0.7894737
# 2 0 4 4 0.2105263
# 3 1 4 8 0.6153846
# 4 1 5 5 0.3846154
From the dplyr vignette:
When you group by multiple variables, each summary peels off one level of the grouping. That mak...
Checking images for similarity with OpenCV
...lue (maybe a percentage) that indicates how similar these images are? E.g. 100% would be returned if the same image was passed twice, 0% would be returned if the images were totally different.
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How to perform element-wise multiplication of two lists?
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14 Answers
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Active
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jQuery attr vs prop?
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71
Unfortunately none of your links work :(
Some insight though, attr is for all attributes. prop i...
Minimum and maximum date
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179
From the spec, §15.9.1.1:
A Date object contains a Number indicating a particular instant in...
Find integer index of rows with NaN in pandas dataframe
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11 Answers
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Cleaning `Inf` values from an R dataframe
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121
Option 1
Use the fact that a data.frame is a list of columns, then use do.call to recreate a ...
leading zeros in rails
...min , both integers in my application. For hr field, if the user enters "1" I would like Rails to automatically pad it to "01" before saving it to the database. Also for the min field if the user enter "0" it should put in as "00".
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