describe

Pandas groupby and describe flags AttributeError

由 孤街醉人 提交于 2019-12-24 05:26:06
问题 I have a bunch of data stored in vals . The indices are monotonic, but not continuous. I'm attempting to do some analysis on histograms of the data, so I've created the following structure: hist = pd.DataFrame(vals) hist['bins'] = pd.cut(vals, 100) This is data taken from an experimental instrument and I know that some of the bins have only 1 or 2 counts in them, which I'm trying to remove. I've tried using groupby as follows and get the following error (Full traceback included at the end of

R convert summary result (statistics with all dataframe columns) into dataframe

由 对着背影说爱祢 提交于 2019-12-11 02:36:59
问题 [I'm new to R...] I have this dataframe: df1 <- data.frame(c(2,1,2), c(1,2,3,4,5,6), seq(141,170)) #create data.frame names(df1) <- c('gender', 'age', 'height') #column names I want the df1 's summary in a dataframe object that looks like this: count mean std min 25% 50% 75% max age 30.0000 3.5000 1.7370 1.0000 2.0000 3.5000 5.0000 6.0000 gender 30.0000 1.6667 0.4795 1.0000 1.0000 2.0000 2.0000 2.0000 height 30.0000 155.5000 8.8034 141.0000 148.2500 155.5000 162.7500 170.0000 I've generated

typescript mocha describe is not a function

由 做~自己de王妃 提交于 2019-12-10 14:01:39
问题 The issue I have is that mocha-typescript keeps throwing an error that describe is not defined. TypeError: mocha_typescript_1.describe is not a function at DatabaseTest.WrongPath (test/database_test.ts:21:9) at Context.<anonymous> (node_modules/mocha-typescript/index.ts:218:22) My tsconfig.json { "compilerOptions": { "target": "es6", "module": "commonjs", "outDir": "dist", "sourceMap": true, "lib": ["es6"], "experimentalDecorators": true, "emitDecoratorMetadata": true, "noUnusedLocals": true,

Python Dataframes: Describing a single column

由 做~自己de王妃 提交于 2019-12-06 22:40:23
问题 Is there a way I can apply df.describe() to just an isolated column in a DataFrame. For example if I have several columns and I use df.describe() - it returns and describes all the columns. From research, I understand I can add the following: "A list-like of dtypes : Limits the results to the provided data types. To limit the result to numeric types submit numpy.number. To limit it instead to object columns submit the numpy.object data type. Strings can also be used in the style of select

describe vs context in rspec. Differences? [duplicate]

由 风流意气都作罢 提交于 2019-12-06 17:16:29
问题 This question already has answers here : RSpec: describe, context, feature, scenario? (3 answers) Closed 5 years ago . I've read a little bit about how one should organize rspec code. It seems like "context" is used more for states of objects. In your words, how would you describe how to use "describe" in rspec code? Here is a snippet of my movie_spec.rb code: require_relative 'movie' describe Movie do before do @initial_rank = 10 @movie = Movie.new("goonies", @initial_rank) end it "has a

Python Dataframes: Describing a single column

由 南楼画角 提交于 2019-12-05 04:28:56
Is there a way I can apply df.describe() to just an isolated column in a DataFrame. For example if I have several columns and I use df.describe() - it returns and describes all the columns. From research, I understand I can add the following: "A list-like of dtypes : Limits the results to the provided data types. To limit the result to numeric types submit numpy.number. To limit it instead to object columns submit the numpy.object data type. Strings can also be used in the style of select_dtypes (e.g. df.describe(include=['O'])). To select pandas categorical columns, use 'category'" However I

describe vs context in rspec. Differences? [duplicate]

由 白昼怎懂夜的黑 提交于 2019-12-04 23:04:22
This question already has an answer here: RSpec: describe, context, feature, scenario? 3 answers I've read a little bit about how one should organize rspec code. It seems like "context" is used more for states of objects. In your words, how would you describe how to use "describe" in rspec code? Here is a snippet of my movie_spec.rb code: require_relative 'movie' describe Movie do before do @initial_rank = 10 @movie = Movie.new("goonies", @initial_rank) end it "has a capitalied title" do expect(@movie.title) == "Goonies" end it "has a string representation" do expect(@movie.to_s).to eq(

MySQL - SHOW COLUMNS from Multiple Tables

由 一个人想着一个人 提交于 2019-12-04 13:35:14
问题 I am trying to get the column names from 2 tables. I tried a query like: (SHOW COLUMNS FROM users) UNION (SHOW COLUMNS FROM posts) but that does not work & returns a syntax error. I tried the same query using DESCRIBE but that did not work either. How can I get all the column names from multiple tables in a single query? Is it possible? 回答1: From the docs for version 5.0 (http://dev.mysql.com/doc/refman/5.0/en/show-columns.html) "SHOW COLUMNS displays information about the columns in a given

Equivalent of “describe table” in PgAdmin3

由 ↘锁芯ラ 提交于 2019-12-03 15:28:02
问题 Question asked and answered: As many of us know, PostgreSQL does not support describe table or describe view . As one might find from google, PostgreSQL uses \d+ instead. However, if one accesses PostgreSQL using PgAdmin (I am actually using PgAdmin3) then \d+ does not work. What does one do instead? I thought about this question when playing with the query tool in PgAdmin3. I had a "well, duh!" moment when I thought to look at the home window of PgAdmin3, and at the tree on the left side of

Explain Vs Desc anomalies in mysql

由 末鹿安然 提交于 2019-11-30 04:55:00
问题 What are the differences between EXPLAIN and DESC commands in MySQL ? 回答1: Explain will give you more information about a query, describe will give you more information about tables or columns. You can also use EXPLAIN on a table name, in which case it will behave exactly like DESCRIBE. EXPLAIN SELECT * FROM `customer` id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE customer ALL NULL NULL NULL NULL 2 vs. DESCRIBE `customer` Field Type Null Key Default Extra
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