series

问题 This question is related to Working with missing values in Deedle Time Series in F# (1) Suppose i have a Series<'K,'T opt> with some missing values For example i have obtained a series series4;; val it : Series<int,int opt> = 1 -> 1 2 -> 2 3 -> 3 4 -> <missing> I could have got it this way: let series1 = Series.ofObservations [(1,1);(2,2);(3,3)] let series2 = Series.ofObservations [(1,2);(2,2);(3,1);(4,4)] let series3 = series1.Zip(series2,JoinKind.Outer);; let series4 = series3 |> Series

问题 There are at least 4 ways to retrieve elements in a pandas Series: .iloc, .loc .ix and using directly the [] operator. What's the difference between them ? How do they handle missing labels/out of range positions ? 回答1: The general idea is that while .iloc and .loc are guaranteed to perform the look-up by position and index(label) respectively, they are a bit slower than using .ix or directly the [] operator. These two former methods perform the look-up by index or position depending of the

问题 When setting a Series to be indexed by setting the Series.IsXValueIndexed to true the chart requires all Series to be aligned : If you are displaying multiple series and at least one series uses indexed X-values, then all series must be aligned — that is, have the same number of data points—and the corresponding points must have the same X-values. How can you add the necessary Emtpy DataPoints to the slots they are missing in, in any of the Series ? 回答1: This routine first collects all values

问题 I have a pivot table with data like this: Chain Store Units Bob's BB Los Angeles 10 Bob's BB San Diego 12 Tom's TM Los Angeles 12 Tom's TM San Francisco 18 Kate's K Monterey 11 Currently I have a bar chart just showing all stores and units in descending order, so TM San Francisco is first, then TM Los Angeles and BB San Diego, then K Monterey etc. This is how I want to see the data. But I also want to colour code the chains, so Bob's stores have a red bar, Tom's have blue, and Kate's are

问题 I'm trying to do a bit of cleanse to some data sets, I can accomplish the task with some for loops but I wanted a more pythonic/pandorable way to do this. This is the code I came up with, the data is not real..but it should work import pandas as pd # This is a dataframe containing the correct values correct = pd.DataFrame([{"letters":"abc","data":1},{"letters":"ast","data":2},{"letters":"bkgf","data":3}]) # This is the dataframe containing source data source = pd.DataFrame([{"c":"ab"},{"c":

问题 I have a case of a dataframe containing a categorical variable of high cardinality (many unique values). I would like to re-code that variable to a set of values (the top most frequent values) and replace all other values with a catch-all category ("others"). To give a simple example: Here are the two values which should stay unchanged: top_values = ['apple', 'orange'] I established them based on their frequency in the following dataframe column: {'fruits': {0: 'apple', 1: 'apple', 2: 'orange

问题 I have a pandas series object, and i want to subset it based on a value for example: s = pd.Series([1,2,3,4,5,6,7,8,9,10]) how can i subset it so i can get a series object containing only elements greater or under x value. ? 回答1: I believe you are referring to boolean indexing on a series. Greater than x : x = 5 >>> s[s > x] # Alternatively, s[s.gt(x)]. 5 6 6 7 7 8 8 9 9 10 dtype: int64 Less than x (i.e. under x): s[s < x] # or s[s.lt(x)] 回答2: Assuming that by "greater or under x " you mean

问题 I have created a for loop which gives an out like this: SSTIME SCODE 0 0 1 57 3 202 I did reset_index on this series and i got this: SCODE SSTIME 0 0 0 1 1 57 2 3 202 I want to append each result into a dataframe which will have column of scode and sstime. P.S: SCODE can be of different length. My objective is to create a Dataframe from that results. Any help would be appreciated. 回答1: I think you need not reset_index, but concat of list of Series : list_ser = [] #sample loop for crate Series

问题 My pd.series looks like this: df.head() 0 status parentName name describe parent... 1 status parentName name describe parent... 2 status parentName name describe parent... 3 status parentName name describe parent... 4 status parentName name describe parent... Name: destinationurl, dtype: object and each row is a dataframe, which looks like this: status parentName name describe parentDescribe parentEnName parentID id enName 0 0 IT 电子邮箱 提供电子邮箱服务的站点。 Information Technology 25 144 Email Now I

问题 I need to show highchart markers only on hover state and in the legend at all times. I don't want it to show on normal state in the chart. I searched for this and found this post which did not work for me Series markers disable on lines and enable on legend in Highchart 回答1: You can reset drawPoints function. Highcharts.Series.prototype.drawPoints = function() { }; Example: http://jsfiddle.net/11pLzk9m/1/ 来源： https://stackoverflow.com/questions/31997776/highcharts-markers-on-legend-and-hover