Hi Fabrice, You can use a construction such as: \starttext \ctxlua{x = math.floor(10^3*math.pi)/10^3; context(x)} \stoptext Best regards: OK

On 19 Apr 2017, at 15:25, Fabrice Couvreur wrote:

Hello, I do not know Lua but I'll learn later. How to display only 3 digits after the decimal point ? thank you, Fabrice

\starttext \startlinecorrection[blank] \startmidaligned \bTABLE[width=2cm,offset=0.8ex,align={lohi,middle}] \bTR \bTD \math{P} \eTD \bTD \math{m} \eTD \bTD \math{g_M} \eTD \eTR \bTR \bTD \math{1.6} \eTD \bTD \math{0.4} \eTD \bTD \startluacode context(1.6/0.4)\stopluacode \eTD \eTR \bTR \bTD \math{3.1} \eTD \bTD \math{0.8} \eTD \bTD \startluacode context(3.1/0.8)\stopluacode \eTD \eTR \bTR \bTD \math{4.3} \eTD \bTD \math{1.2} \eTD \bTD \startluacode context(4.3/1.2) \stopluacode \eTD \eTR \bTR \bTD \math{5.8} \eTD \bTD \math{1.6} \eTD \bTD \startluacode context(5.8/1.6)\stopluacode \eTD \eTR \bTR \bTD \math{7.5} \eTD \bTD \math{2} \eTD \bTD \startluacode context(7.5/2)\stopluacode \eTD \eTR \eTABLE \stopmidaligned \stoplinecorrection \stoptext ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

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Hello, do you mean this? - It shows EXACTLY 3 digits after the decimal point: ---- \cldcontext{string.format("\letterpercent.3f", 5.8/1.6)} \cldcontext{string.format(string.char(37) .. ".3f", 5.8/1.6)} \startluacode context(string.format("%.3f", 5.8/1.6)) \stopluacode ---- Best regards, Lukas On Wed, 19 Apr 2017 15:25:07 +0200, Fabrice Couvreur wrote:

Hello, I do not know Lua but I'll learn later. How to display only 3 digits after the decimal point ? thank you, Fabrice

\starttext \startlinecorrection[blank] \startmidaligned \bTABLE[width=2cm,offset=0.8ex,align={lohi,middle}] \bTR \bTD \math{P} \eTD \bTD \math{m} \eTD \bTD \math{g_M} \eTD \eTR \bTR \bTD \math{1.6} \eTD \bTD \math{0.4} \eTD \bTD \startluacode context(1.6/0.4)\stopluacode \eTD \eTR \bTR \bTD \math{3.1} \eTD \bTD \math{0.8} \eTD \bTD \startluacode context(3.1/0.8)\stopluacode \eTD \eTR \bTR \bTD \math{4.3} \eTD \bTD \math{1.2} \eTD \bTD \startluacode context(4.3/1.2) \stopluacode \eTD \eTR \bTR \bTD \math{5.8} \eTD \bTD \math{1.6} \eTD \bTD \startluacode context(5.8/1.6)\stopluacode \eTD \eTR \bTR \bTD \math{7.5} \eTD \bTD \math{2} \eTD \bTD \startluacode context(7.5/2)\stopluacode \eTD \eTR \eTABLE \stopmidaligned \stoplinecorrection \stoptext

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Am 19.04.2017 um 15:25 schrieb Fabrice Couvreur:

I do not know Lua but I'll learn later. How to display only 3 digits after the decimal point ?

The default is 3 digits \startluacode function round(a,dec) local dec = dec or 3 local b = math.pow(10,dec) return math.floor(a*b)/b end \stopluacode \starttext \startlinecorrection[blank] \startmidaligned \bTABLE[width=2cm,offset=0.8ex,align={lohi,middle}] \bTR \bTD \math{P} \eTD \bTD \math{m} \eTD \bTD \math{g_M} \eTD \eTR \bTR \bTD \math{1.6} \eTD \bTD \math{0.4} \eTD \bTD \startluacode context(round(1.6/0.4,1))\stopluacode \eTD \eTR \bTR \bTD \math{3.1} \eTD \bTD \math{0.8} \eTD \bTD \startluacode context(round(3.1/0.8))\stopluacode \eTD \eTR \bTR \bTD \math{4.3} \eTD \bTD \math{1.2} \eTD \bTD \startluacode context(round(4.3/1.2,2)) \stopluacode \eTD \eTR \bTR \bTD \math{5.8} \eTD \bTD \math{1.6} \eTD \bTD \startluacode context(5.8/1.6)\stopluacode \eTD \eTR \bTR \bTD \math{7.5} \eTD \bTD \math{2} \eTD \bTD \startluacode context(7.5/2)\stopluacode \eTD \eTR \eTABLE \stopmidaligned \stoplinecorrection \stoptext Herbert