Linked Questions

535
votes
19answers
135k views

Where can I find examples of good Mathematica programming practice?

I consider myself a pretty good Mathematica programmer, but I'm always looking out for ways to either improve my way of doing things in Mathematica, or to see if there's something nifty that I haven't ...
44
votes
4answers
8k views

How to change the default ColorData used in Mathematica's Plot?

This question leads on from the recent question What are the standard colors for plots in Mathematica? There it was determined that the default color palette used by ...
53
votes
2answers
2k views

What are SparseArray Properties? How and when should they be used?

A strange undocumented form of SparseArray is increasingly used in answers on this site: ...
51
votes
3answers
783 views

What bug fixes can be implemented in init.m?

In comments on this question, Mr. Wizard suggested a community wiki to share the bug fixes/workarounds (or possibly other tricks) people load in their init.m. I ...
17
votes
6answers
2k views

Will Version 9 functions all work in Version 10?

Having developed a substantial code base in Mathematica 9, leads me to ask these important questions prior to downloading and installing Mathematica 10. Will any Mathematica functions from the ...
30
votes
5answers
711 views

Unexpected behaviors in built-in functions

Existence of this topic is discussed in this mathematica.meta post. I'm sure I am not the only non-beginner in WL who from time to time finds themselves not being able to predict an outcome of a ...
32
votes
3answers
13k views

Guidelines on giving readable names to variables [closed]

I know that one cannot use underscore to a variable name, like degree_of_The_First_Polynomial. But for a long variable name, it ...
38
votes
3answers
973 views

Most influential and/or disrupting features introduced with new versions of Mathematica

This is something that has been bugging me for ages. With every upgrade, Mathematica has added new functionalities and amended some of its bugs. In the process, though, some older functionality has ...
14
votes
5answers
2k views

Changing the order of elements in a chart legend

In a stacked BarChart or Histogram the bars are stacked from bottom to top, while the legend entries are listed from top to ...
18
votes
3answers
1k views

What functions work in which version of Mathematica

Is there any good documentation on which version will work (remained the same) in which version of Mathematica? Or at least an overview of when functions were introduced? In this instance for example ...
19
votes
3answers
5k views

How to get grid lines at all (log) tick marks in Version 10?

Bug introduced in 10.0.0 and fixed in 10.1.0 Update: It seems that only versions 10.0.0, 10.0.1, and 10.0.2 are affected by this problem. For 10.0.0 there is no general solution known to me due to ...
9
votes
4answers
856 views

How many times do the two given curves intersect at the origin?

I'm reading/studying on my own a book about algebraic curves. I'm trying to find a way for Mathematica help me with the following (the book, ISBN: 038731802X, allows me to use any CAS / program. ...
28
votes
3answers
515 views

How can I restore the old ImageCompose behaviour?

Bug fixed in 11.3 Update This issue caught me out again so I contacted support once more. They have confirmed that the development team considers the new behaviour to be correct and claim that "...
27
votes
3answers
530 views

Bug in MovingMap (breaking change between version 10.1 and 10.0.2)?

The MovingMap window spec has been changed between version 10.1 and 10.0.2. Version 10.0.2 ...
13
votes
3answers
1k views

Why does Hash return different values in Version 7?

This function does not work correctly for me. The generated Gravatars do not match the ones actually produced by using the corresponding address. The problem was traced to differing output from the <...
32
votes
2answers
2k views

How can I use the Klingon alphabet symbols?

Note: This functionality is presently missing. See: How to add named characters to Mathematica 10? Mathematica apparently supports the Klingon alphabet: ...
26
votes
2answers
513 views

Version inconsistency with optional arguments: what if the default value doesn't match the pattern?

I just came across some weird behaviour. Take this function definition: ClearAll[f] f[vs_List : All] := "match" The default value of ...
16
votes
2answers
3k views

PlotLegends -> “Expressions” not working when Plot given one function

I don't get a legend when I use the option PlotLegends -> "Expressions" when the first argument to Plot is a single function. It works OK when I give ...
19
votes
2answers
451 views

PlotLegends won't generate automatically more than 15 labels in v10

Update: NOT fixed in V10.0 - 12.0.0 While testing the examples from this recent post, i've noticed a problem in V.10 with PlotLegends when it has to automatically ...
16
votes
2answers
1k views

Different colors when comparing Plot3D V9 and V10

I am trying to create Plot3D with same color as we used to get in V9 but without success. I used PlotTheme -> "Classic" in V10 but the results looks like somehow ...
10
votes
3answers
763 views

How can I speed up my compiled RBF interpolating function?

Overview I have a function that acts like the Interpolation on sparse $n$-dimensional data using a simple implementation of RBF interpolation method. I want my ...
8
votes
3answers
3k views

Machine precision near zero: not fulfilled?

I am puzzled by the behavior of Mathematica machine precision with numbers approaching zero. This manifests itself, e.g., with FixedPoint and the like. In the ...
20
votes
1answer
1k views

New behavior of PlotRange in Mathematica 10

In Mathematica 10, when I plot data that has small changes around some non-zero value, the plot chooses a PlotRange that "collapses" the data so that the variations ...
17
votes
1answer
420 views

HMAC correct on 11.2 but wrong and different on 11.3 running same code

If you run this code on 11.2 ...
5
votes
8answers
600 views

How to sort my list?

For example I have two lists of such structure L1 = {{"Australia",a1}, {"USA",a2}, {"Norway",a3},...} L2 = {{"Russia",b1}, {"Norway",b2}, {"Japan",b3},...} I ...
14
votes
2answers
908 views

Precise cropping with ImageCrop

Bug introduced in 8 or earlier and persisting through 12.0 or later Reported to the support as [CASE:3968587]. Published on Wolfram Community. In the presence of alpha channel ...
9
votes
4answers
488 views

Incompatibility of Row and TeXForm

Bug introduced in 9.0 and persisting through 11.0 Update: Since no one has been able to give a reason for this change in behavior or provide a solution I am tagging this as a bug. Please report it ...
18
votes
2answers
288 views

Why this weird return value from `N`?

Bug introduced in 11.3 and fixed in 12.0. Why does N just return the exact number below? I want a 2000 digit approximation... ...
7
votes
3answers
2k views

How to force ListPlot show origin (0,0)? [duplicate]

I've used AxesOrigin->{0,0} in Mathematica until version 9 to get origin $(0,0)$ into the plot. So the following code gave the following output: ...
10
votes
2answers
259 views

Blur, GaussianFilter and ImageConvolve doesn't work on some images

In versions 8.0.4 and 9.0.1 applying Blur to an image gives expected result: ...

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