lookup

问题 I have a DataFrame and a lookup table. For a key in the DataFrame I would like to lookup the corresponding row in the lookup table and calculate the Euclidian distance for a number of columns. Mock data looks like import pandas as pd import numpy.random as rand df = pd.DataFrame({'key':rand.randint(0, 5, 10), 'X': rand.randn(10), 'Y': rand.randn(10), 'Z': rand.randn(10)}) X Y Z key 0 0.163142 0.387871 -0.433157 3 1 -2.020957 -1.537615 -1.996704 0 2 1.249118 1.633246 0.028222 1 3 -0.019601 1

问题 I have a lookup table in Excel with ColA and ColB : ColA ColB ColC va 1 value1 ColC is the actual value table I need to do a wildcard lookup with lookup_value = "value1" I need to perform an operation that if the value of ColC matches the characters in ColA then it should return me ColB value, i.e. 1 I want to use wildcards in the lookup function to achieve this result. Any help will be appreciated! Thanks 回答1: You can use wildcards with VLOOKUP. You'll have to rearrange your table so that

问题 I'm trying to optimize a 3d demo by populating a lookup table with 3d points(Vector 3D http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/geom/Vector3D.html) which I will then access later on. These 3D points will define a random and loopable path in 3D space. Does anyone know a way of achieving this? I was thinking modifying the Greensock Bezier tween to create a bezier in 3d space, and then somehow grabbing the xyz values of the resulting tween. 回答1: Ok, you'll need to

问题 The idea is to contruct a lookup with unique Employer name. The lookup works fine but when I select a value and then select the lookup button again and click on the place marked in RED , there are duplicate values, which is wrong. Kindly refer the snippet and snapshot QueryBuildDataSource qbds; Query query = new Query(); FormStringControl control = dialog.formRun().controlCallingMethod(); SysTableLookup sysTableLookup = SysTableLookup::newParameters(tablenum(VendTable), control); ; qbds =

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year . I made a program recently that dealt with a lot of if/else statements to return particular values. Someone recommended to use lookup tables instead. My question is, how do they work and how do you implement it? What is the difference between a map, hash table, and lookup table. This

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed last year . I made a program recently that dealt with a lot of if/else statements to return particular values. Someone recommended to use lookup tables instead. My question is, how do they work and how do you implement it? What is the difference between a map, hash table, and lookup table. This

问题 im new to grails and im looking for a way to retrieve data from context.xml for the build version. my development environment config looks like this. grails { mail { host = "smtp.gmail.com" port = 25 username = "username@mail.com" password = 'password' props = ["mail.smtp.auth":"true", "mail.smtp.socketFactory.port":"25", "mail.debug":"false", "mail.smtp.from":"username@mail.com", "mail.smtp.socketFactory.class":"javax.net.ssl.SSLSocketFactory", "mail.smtp.socketFactory.fallback":"false"] }

问题 im new to grails and im looking for a way to retrieve data from context.xml for the build version. my development environment config looks like this. grails { mail { host = "smtp.gmail.com" port = 25 username = "username@mail.com" password = 'password' props = ["mail.smtp.auth":"true", "mail.smtp.socketFactory.port":"25", "mail.debug":"false", "mail.smtp.from":"username@mail.com", "mail.smtp.socketFactory.class":"javax.net.ssl.SSLSocketFactory", "mail.smtp.socketFactory.fallback":"false"] }

问题 I am trying to implement a lookup table kind of thing in MATLAB. I have data generated from a script with three variables swept, let's say var_a, var_b, var_c . These are nested sweep, ( var_a -> var_b -> var_c ) And there are 10 outputs, out_01, out02, ..., out10 . Now I have arranged the each output as out_01 = f(var_a,var_b,var_c) , i.e., simply rearranging the data similar to nested loop. My question is, how can I build a lookup table for such data? I will give input like get out_01 @

问题 I am trying to do a very simple range lookup in MS Access. I basically have two tables: I am looking for a query that will be able to go find the appropriate range of the salary and return the correct tax rate. I started off with this as my base: SELECT IIf(Salary Between 1000 And 2000,10,20) FROM Employees; But I am not making any sort of progress. Any assistance will be greatly appreciated. 回答1: One possible method is to use a correlated subquery, e.g.: select e.*, (select top 1 t.taxrate