{"id":5661,"date":"2025-07-15T13:34:44","date_gmt":"2025-07-15T13:34:44","guid":{"rendered":"https:\/\/functiontranslator.com\/je-cislo\/"},"modified":"2021-02-26T09:58:21","modified_gmt":"2021-02-26T09:58:21","slug":"isnumber","status":"publish","type":"post","link":"https:\/\/functiontranslator.com\/cs\/isnumber\/","title":{"rendered":"JE.\u010cISLO"},"content":{"rendered":"

Funkce ISNUMBER (v \u010de\u0161tin\u011b JE.\u010cISLO) je velmi u\u017eite\u010dn\u00e1 funkce v programu Microsoft Excel i Google Sheets, kter\u00e1 ov\u011b\u0159uje, zda je hodnota v bu\u0148ce \u010d\u00edslo. Jestli\u017ee hodnota odpov\u00edd\u00e1 \u010d\u00edseln\u00e9mu typu, funkce vr\u00e1t\u00ed hodnotu TRUE (pravda); v opa\u010dn\u00e9m p\u0159\u00edpad\u011b vr\u00e1t\u00ed FALSE (nepravda). Je kl\u00ed\u010dov\u00e1 pro anal\u00fdzu dat a automatizaci \u00fakol\u016f, zejm\u00e9na p\u0159i pr\u00e1ci s velk\u00fdmi datasety, kde je t\u0159eba filtrovat \u010d\u00edseln\u00e9 od ne\u010d\u00edseln\u00fdch vstup\u016f.<\/p>\n

Syntaxe a p\u0159\u00edklady funkc\u00ed<\/h2>\n

Syntaxe funkce JE.\u010cISLO je stejn\u00e1 pro Microsoft Excel i Google Sheets a je velmi jednoduch\u00e1:<\/p>\n

=JE.\u010cISLO(hodnota)<\/code><\/pre>\n
    \n
  • hodnota<\/code> \u2013 Zde m\u016f\u017eete vlo\u017eit bu\u0148ku nebo hodnotu, kterou chcete otestovat, zda je \u010d\u00edslem.<\/li>\n<\/ul>\n
    P\u0159\u00edklady pou\u017eit\u00ed:<\/p>\n
    =JE.\u010cISLO(A1) - vr\u00e1t\u00ed TRUE, pokud bu\u0148ka A1 obsahuje \u010d\u00edslo, jinak vr\u00e1t\u00ed FALSE. =JE.\u010cISLO(\"text\") - vr\u00e1t\u00ed FALSE, proto\u017ee \"text\" nen\u00ed \u010d\u00edslo. =JE.\u010cISLO(123) - vr\u00e1t\u00ed TRUE, proto\u017ee 123 je \u010d\u00edslo.<\/code><\/pre>\n
    Pou\u017eit\u00ed ve skute\u010dn\u00fdch situac\u00edch<\/h2>\n
    Tato funkce m\u016f\u017ee b\u00fdt extr\u00e9mn\u011b u\u017eite\u010dn\u00e1 v n\u011bkolika sc\u00e9n\u00e1\u0159\u00edch. Poj\u010fme prozkoumat dva p\u0159\u00edklady praktick\u00e9ho pou\u017eit\u00ed:<\/p>\n
    1. Filtrace dat obsahuj\u00edc\u00edch \u010d\u00edseln\u00e9 a textov\u00e9 hodnoty<\/h3>\n
    P\u0159edstavme si, \u017ee m\u00e1me k dispozici list s mixem \u010d\u00edseln\u00fdch a textov\u00fdch dat a pot\u0159ebujeme analyzovat pouze \u010d\u00edsla. Funkce JE.\u010cISLO n\u00e1m umo\u017en\u00ed rychle identifikovat a odd\u011blit tyto dva typy dat.<\/p>\n
    Rozsah bun\u011bk v A1:A10: 25, \"jablko\", 30, \"hrn\u00ed\u010dek\", 45 Pokud chceme zjistit, kter\u00e9 z t\u011bchto hodnot jsou \u010d\u00edsla, pou\u017eijeme: =JE.\u010cISLO(A1)<\/code><\/pre>\n
    Pokud chceme aplikovat tuto funkci na cel\u00fd rozsah a v\u00fdsledky zobrazit v jin\u00e9m sloupci, m\u016f\u017eeme vyu\u017e\u00edt funkci ARRAYFORMULA v Google Sheets nebo v Excelu funkci roz\u0161\u00ed\u0159it ta\u017een\u00edm do dal\u0161\u00edch bun\u011bk.<\/p>\n
    2. Ov\u011b\u0159en\u00ed vstupu od u\u017eivatele<\/h3>\n
    P\u0159i pr\u00e1ci s u\u017eivatelsk\u00fdmi vstupy, kde je o\u010dek\u00e1v\u00e1n \u010d\u00edseln\u00fd form\u00e1t (nap\u0159\u00edklad v p\u0159\u00edpad\u011b zad\u00e1v\u00e1n\u00ed v\u011bku nebo po\u010dtu kus\u016f), je u\u017eite\u010dn\u00e9 ov\u011b\u0159it, \u017ee u\u017eivatel skute\u010dn\u011b zadal \u010d\u00edselnou hodnotu a ne text \u010di jin\u00fd neplatn\u00fd form\u00e1t.<\/p>\n
    Pokud u\u017eivatel zad\u00e1 hodnotu do bu\u0148ky B2, m\u016f\u017eeme vedle zobrazit, zda se jedn\u00e1 o \u010d\u00edslo: =JE.\u010cISLO(B2)<\/code><\/pre>\n
    Tento jednoduch\u00fd test pom\u016f\u017ee zajistit, \u017ee data budou konzistentn\u00ed a spr\u00e1vn\u011b zpracovateln\u00e1 v dal\u0161\u00edch kroc\u00edch anal\u00fdzy nebo zpracov\u00e1n\u00ed.<\/p>\n
    P\u0159edchoz\u00ed p\u0159\u00edklady ukazuj\u00ed z\u00e1kladn\u00ed, ale velmi efektivn\u00ed vyu\u017eit\u00ed funkce JE.\u010cISLO v oblasti datov\u00e9 anal\u00fdzy a spr\u00e1vy dat. Pokro\u010dil\u00e9 techniky mohou zahrnovat kombinace t\u00e9to funkce s jin\u00fdmi funkcemi, co\u017e roz\u0161i\u0159uje mo\u017enosti pr\u00e1ce s daty, kter\u00e9 Excel a Google Sheets nab\u00edzej\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"
    Vr\u00e1t\u00ed hodnotu PRAVDA, pokud je argument hodnota \u010d\u00edslo<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[291],"tags":[],"class_list":["post-5661","post","type-post","status-publish","format-standard","hentry","category-informacni"],"acf":[],"yoast_head":"\nFunkce ISNUMBER (JE.\u010cISLO) v Excelu: jak funguje, primjeri kori\u0161tenja formule<\/title>\n<meta name=\"description\" content=\"Opis funkcije ISNUMBER (JE.\u010cISLO) u Excelu i Google tablicama. 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