finance

R tick data : merging date and time into a single object

由 落爺英雄遲暮 提交于 2019-11-26 05:56:48
问题 I\'m currently working in tick data with R and I would like to merge date and time into a single object as I need to get a precise time object to compute some statistics on my data. Here is how my data looks like: date time price flag exchange 2 XXH10 2010-02-02 08:00:03 2787 1824 E 3 XXH10 2010-02-02 08:00:04 2786 3 E 4 XXH10 2010-02-02 08:00:04 2787 6 E 5 XXH10 2010-02-02 08:00:04 2787 1 E 6 XXH10 2010-02-02 08:00:04 2787 1 E Basically, I would like to merge the columns \"date\" and \"time\

Precise Financial Calculation in JavaScript. What Are the Gotchas?

由 荒凉一梦 提交于 2019-11-26 03:46:40
In the interest of creating cross-platform code, I'd like to develop a simple financial application in JavaScript. The calculations required involve compound interest and relatively long decimal numbers. I'd like to know what mistakes to avoid when using JavaScript to do this type of math—if it is possible at all! Daniel Vassallo You should probably scale your decimal values by 100, and represent all the monetary values in whole cents. This is to avoid problems with floating-point logic and arithmetic . There is no decimal data type in JavaScript - the only numeric data type is floating-point.

Precise Financial Calculation in JavaScript. What Are the Gotchas?

由 浪子不回头ぞ 提交于 2019-11-26 01:49:17
问题 In the interest of creating cross-platform code, I\'d like to develop a simple financial application in JavaScript. The calculations required involve compound interest and relatively long decimal numbers. I\'d like to know what mistakes to avoid when using JavaScript to do this type of math—if it is possible at all! 回答1: You should probably scale your decimal values by 100, and represent all the monetary values in whole cents. This is to avoid problems with floating-point logic and arithmetic
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