R: R: ReplacePart -> eliminate
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- Subject: [mg131671] R: R: ReplacePart -> eliminate
- From: "Brambilla Roberto Luigi (RSE)" <Roberto.Brambilla at rse-web.it>
- Date: Wed, 18 Sep 2013 06:29:24 -0400 (EDT)
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Many thanks Bob! I find great Cases[y, {_?NumericQ ..}] Since it works both with simple list and couple list. What the meaning of .. operator? Roberto Da: Bob Hanlon [mailto:hanlonr357 at gmail.com] Inviato: mercoled=EC 18 settembre 2013 04:41 A: Brambilla Roberto Luigi (RSE) Cc: MathGroup Oggetto: Re: R: ReplacePart -> eliminate y = Table[{n, 1/(3 - n)}, {n, 0, 5}] // Quiet {{0, 1/3}, {1, 1/2}, {2, 1}, {3, ComplexInfinity}, {4, -1}, {5, -(1/2)}} Note that your crtiteria in the Select does not produce a straight True or False {NumberQ[#], NumberQ[#]} &[{2, 1}] {False, False} num = Select[y, And @@ NumericQ /@ # &] {{0, 1/3}, {1, 1/2}, {2, 1}, {4, -1}, {5, -(1/2)}} However, Cases is a better choice here num == Cases[y, _?(And @@ NumericQ /@ # &)] == Cases[y, {_?NumericQ, _?NumericQ}] == Cases[y, {_?NumericQ ..}] True Bob Hanlon On Tue, Sep 17, 2013 at 9:36 PM, Brambilla Roberto Luigi (RSE) <Roberto.Brambilla at rse-web.it> wrote: Great! Many thanks Alexei! Now I have the following list of couples y = Table[{n, 1/(3 - n)}, {n, 0, 5}] {{0, 1/3}, {1, 1/2}, {2, 1}, {3, ComplexInfinity}, {4, -1}, {5, -(1/2)}} The command Select[y, {NumberQ[#], NumberQ[#]} &] does not work. How can I modify your suggestion in order to eliminate the non-numerical couple {3,ComplexInfinity} from the list (avoiding Transpose etc..)? Rob. -----Messaggio originale----- Da: Alexei Boulbitch [mailto:Alexei.Boulbitch at iee.lu] Inviato: marted=EC 17 settembre 2013 09:09 A: mathgroup at smc.vnet.net Cc: Brambilla Roberto Luigi (RSE) Oggetto: Re: ReplacePart -> eliminate I'd like to eliminate the Indeterminate (or other non-numerical terms, as Infinite, etc...) items. Es. x = {-1.25664, 0.628319, -0.628319, 1.25664, Indeterminate, -1.25664, 0.628319, -0.628319, 1.25664, Indeterminate}; or x=Table[1/(3 - n), {n, 0, 5}]) {1/3, 1/2, 1, ComplexInfinity, -1,-1/2} How can I do it with a simple command? Many thanks, Roberto Hi, Roberto, Try this: x = {-1.25664, 0.628319, -0.628319, 1.25664, Indeterminate, -1.25664, 0.628319, -0.628319, 1.25664, Indeterminate}; y = Table[1/(3 - n), {n, 0, 5}]; Select[x, NumberQ[#] &] Select[y, NumberQ[#] &] {-1.25664, 0.628319, -0.628319, 1.25664, -1.25664, 0.628319, \ -0.628319, 1.25664} {1/3, 1/2, 1, -1, -(1/2)} Have fun, Alexei Alexei BOULBITCH, Dr., habil. IEE S.A. ZAE Weiergewan, 11, rue Edmond Reuter, L-5326 Contern, LUXEMBOURG Office phone : +352-2454-2566 Office fax: +352-2454-3566 mobile phone: +49 151 52 40 66 44 e-mail: alexei.boulbitch at iee.lu RSE SpA ha adottato il Modello Organizzativo ai sensi del D.Lgs.231/2001, in forza del quale l'assunzione di obbligazioni da parte della Societ=E0 avvie ne con firma di un procuratore, munito di idonei poteri. RSE adopts a Compliance Programme under the Italian Law (D.Lgs.231/2001). According to this RSE Compliance Programme, any commitment of RSE is taken by the signature of one Representative granted by a proper Power of Attorney. Le informazioni contenute in questo messaggio di posta elettronica sono riservate e confidenziali e ne e' vietata la diffusione in qualsiasi modo o for ma. Qualora Lei non fosse la persona destinataria del presente messaggio, Lainvitiamo a non diffonderlo e ad eliminarlo, dandone gentilmente comunicazione al mittente. The information included in this e-mail and any attachments are confidential and may also be privileged. If you are not the correct recipient, you are kindly requested to notify the sender immediately, to cancel it and not to disclose the contents to any other person.
- References:
- R: ReplacePart -> eliminate
- From: "Brambilla Roberto Luigi (RSE)" <Roberto.Brambilla@rse-web.it>
- R: ReplacePart -> eliminate