python - Creating a new column in a dataframe based on the result of the addition of three others -


i have produced following code:

data['customer_segment'] = np.where(((data['order frequency segment']+data['order_size_seg']+data['movc % segment'])<=5,1), np.where((data['order frequency segment']+data['order_size_seg']+data['movc % segment'])>5 & (data['order frequency segment']+data['order_size_seg']+data['movc % segment'])<=8,2), np.where((data['order frequency segment']+data['order_size_seg']+data['movc % segment'])>8 & (data['order frequency segment']+data['order_size_seg']+data['movc % segment'])<=11,3), np.where((data['order frequency segment']+data['order_size_seg']+data['movc % segment'])>11 & (data['order frequency segment']+data['order_size_seg']+data['movc % segment'])<=14,4),5)

i'm getting following error:

valueerror: truth value of series ambiguous. use a.empty, a.bool(), a.item(), a.any() or a.all().

would appreciate reach best solution, feel 1 i'm trying may not optimal.

example of input follows:

movc % segment  order_size_seg  order frequency segment 1                      2                 3 5                      2                 1 5                      5                 5

i trying add column based on result of summing each row follows:

if 3-5 1 if 6-8 2 if 9-11 3 if 12-14 4 if 15+ 5

would this

i think need instead multiple np.where 1 numpy.select:

#only once sum values  = data['order frequency segment']+data['order_size_seg']+data['movc % segment'] #conditions () m1 = a<=5 m2 = (a>5) & (a<=8) m3 = (a>8) & (a<=11) m4 = (a>11) & (a<=14)  data['customer_segment'] = np.select([m1, m2, m3, m4],[1,2,3,4], default=5)

another solution use cut:

bins = [-np.inf,5,8,11,14, np.inf] labels = [1,2,3,4,5]  data['customer_segment'] = pd.cut(df['b'], bins=bins, labels=labels)

Comments

Post a Comment

Popular posts from this blog

Is there a better way to structure post methods in Class Based Views -

i'm using class based views in django , never specify url in ajax calls , omit action parameter in form because know these requests go through post method of class based view. notice view - profile page make many requests depending on user updating on page - post method become convoluted , if/else mess example: def post(self, request, *args, **kwargs): # handle user changing available date if request.post.get('availabledate') != none: self.updateavailabledate(request) return jsonresponse({'result':'success'}) if request.post.get('newprojectname') != none: creative_user = creativeuserprofile.objects.get(id = request.user.id) project = project.create_project(creative_user, request.post['newprojectname']) project.save() return jsonresponse({'projectid': project.id }) if request.post.get('projectimage') != none , request.files['file']: proj...
Read more

performance - Why is XCHG reg, reg a 3 micro-op instruction on modern Intel architectures? -

i'm doing micro-optimization on performance critical part of code , came across sequence of instructions (in at&t syntax): add %rax, %rbx mov %rdx, %rax mov %rbx, %rdx i thought had use case xchg allow me shave instruction , write: add %rbx, %rax xchg %rax, %rdx however, dimay found agner fog's instruction tables , xchg 3 micro-op instruction 2 cycle latency on sandy bridge, ivy bridge, broadwell, haswell , skylake. 3 whole micro-ops , 2 cycles of latency! 3 micro-ops throws off 4-1-1-1 cadence , 2 cycle latency makes worse original in best case since last 2 instructions in original might execute in parallel. now... cpu might breaking instruction micro-ops equivalent to: mov %rax, %tmp mov %rdx, %rax mov %tmp, %rdx where tmp anonymous internal register , suppose last 2 micro-ops run in parallel latency 2 cycles. given register renaming occurs on these micro-architectures, though, doesn't make sense me done way. why wouldn't register renamer ...
Read more

c# - Asp.net web api : redirect unauthorized requst to forbidden page -

im trying redirect unauthorized request forbidden page instead i'm getting forbidden page in response body , how can fix ? here's startup class : app.createperowincontext(storecontext.create); app.createperowincontext<applicationusermanager>(applicationusermanager.create); app.createperowincontext<applicationsigninmanager>(applicationsigninmanager.create); app.usecookieauthentication(new cookieauthenticationoptions { authenticationtype = defaultauthenticationtypes.applicationcookie, expiretimespan = timespan.fromdays(30), }); app.useexternalsignincookie(defaultauthenticationtypes.externalcookie); app.usetwofactorsignincookie(defaultauthenticationtypes.twofactorcookie, timespan.fromminutes(5)); app.usetwofactorrememberbrowsercookie(defaultauthenticationtypes.twofactorrememberbrowsercookie); the method im trying reach : [httpget] [authorize(roles = "admin")] public string getcurrentusername() { return userman...
Read more