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Add legend to ggplot2 line plot
I have a question about legends in ggplot2. I managed to plot three lines in the same graph and want to add a legend with the three colors used. This is the code used
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Ember.js or Backbone.js for Restful backend [closed]
I already know that ember.js is a more heavy weight approach in contrast to backbone.js. I read a lot of articles about both.
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Spring Boot - Cannot determine embedded database driver class for database type NONE
This is the error that is thrown when trying to run my web app:
33 Answers
33
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How to retry after exception?
I have a loop starting with for i in range(0, 100) . Normally it runs correctly, but sometimes it fails due to network conditions. Currently I have it set so that on failure, it will continue in the except clause (continue on to the next number for i ).
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Java OCR implementation [closed]
This is primarily just curiosity, but are there any OCR implementations in pure Java? I'm curious how this would perform purely in Java, and OCR in general interests me, so I'd love to see how it's implemented in a language I thoroughly understand. Naturally, this would require that the implementati...
detect key press in python?
I am making a stopwatch type program in python and I would like to know how to detect if a key is pressed (such as p for pause and s for stop), and I would not like it to be something like raw_input that waits for the user's input before continuing execution. Anyone know how to do this in a while lo...
How to define an empty object in PHP
with a new array I do this:
16 Answers
16
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Which exception should I raise on bad/illegal argument combinations in Python?
I was wondering about the best practices for indicating invalid argument combinations in Python. I've come across a few situations where you have a function like so:
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Plotting two variables as lines using ggplot2 on the same graph
A very newbish question, but say I have data like this:
5 Answers
5
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How can I change the image displayed in a UIImageView programmatically?
I have an IBOutlet to a UIImageView , but when I look at the UIImageView doc, I can't see any hints about programmatically changing it. Do I have to fetch an UIImage object from that UIImageView ?
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