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| Checking for Equal to Null will not yield True when you think, because when Part goes out of bounds it returns a Part expression not Null. In[ ]:= Head[Part[h, 40]] (* During evaluation of In[73]:= Part::partw: Part 40 of... |
| With[{text = Style[Text["Label 1"], FontSize -> 16, FontColor -> Black, Background -> LightGray]}, Graphics[text, ImageSize -> ImageDimensions[Rasterize@text]] ] |
| &[Wolfram Notebook][1] [1]: https://www.wolframcloud.com/obj/ea6109ce-eff3-4662-acfe-afc2ce7368df |
| Use structured selection to target all the Cells that need to have Evaluatable deactivated. To make a collection of individually targeted Cells hold down the Ctrl key while clicking. To select all Cells of the same type, hold down Alt then click on... |
| These two approaches give the same result: AssociationThread[keys -> #] & /@ values (*{ 1, "b" -> 2, "c" -> 3|>, 4, "b" -> 5, "c" -> 6|>, 7, "b" -> 8, "c" -> 9|>}*) Association /@ (MapThread[Rule, {keys, #}] & /@ values) ... |
| Hold the expression using With and insert a value for a With[{a = 1}, Plot[{a M1 + a M1^3.4}, {M1, 1, 100}, PlotRange -> Automatic] ] Same thing can be done, instead of setting the value for Mc With[{Mc = 54}, ... |
| Beat me to it! IntegerDigits will break up the numbers, into sub-lists IntegerDigits@{12, 35} {{1, 2}, {3, 5}} Flatten will break up the sub-lists Flatten@IntegerDigits@{12, 35} {1, 2, 3, 5} FromDigits will make a new integer... |
| http://jonathankinlay.com/2017/01/copulas-risk-management/ Copulas in Risk Management on Page 4 has: SP500returns = Log[Drop[SP500prices[[All, 2]], 1]] - Log[Drop[SP500prices[[All, 2]], -1]]; NASDAQreturns = ... |
| The data is accessible through EntityValue EntityValue[Entity["Financial", "NYSE:SPY"], "LatestTrade"] |
| "Close" for historical values is adjusted close and for "BOND" (PIMCO Total Return Active ETF) dates before {2016, 11, 1} are seeming to vacillate between two values from the source. This can be avoided by using "RawClose" for dates in that range. ... |