• #### What am I missing?

From Al Greynolds@21:1/5 to All on Fri Dec 4 08:10:59 2020
From these Gnuplot 5+ commands:

rx=2;kx=0;ry=1;ky=-1
ex=(1+kx)/rx
ey=(1+ky)/ry
show variables

I get this output:

rx = 2
kx = 0
ry = 1
ky = -1
ex = 0
ey = 0

Why is ex zero?

Al

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• From Chris Elvidge@21:1/5 to Al Greynolds on Fri Dec 4 19:12:00 2020
On 04/12/2020 04:10 pm, Al Greynolds wrote:
From these Gnuplot 5+ commands:

rx=2;kx=0;ry=1;ky=-1
ex=(1+kx)/rx
ey=(1+ky)/ry
show variables

I get this output:

rx = 2
kx = 0
ry = 1
ky = -1
ex = 0
ey = 0

Why is ex zero?

Al

Note that gnuplot uses both "real" and "integer" arithmetic, like
FORTRAN and C. Integers are entered as "1", "-10", etc; reals as "1.0", "-10.0", "1e1", 3.5e-1, etc. The most important difference between the
two forms is in division: division of integers truncates: 5/2 = 2;
division of reals does not: 5.0/2.0 = 2.5.

--
Chris Elvidge
England

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• From Al Greynolds@21:1/5 to Chris Elvidge on Fri Dec 4 11:51:27 2020
On Friday, December 4, 2020 at 12:12:08 PM UTC-7, Chris Elvidge wrote:

Note that gnuplot uses both "real" and "integer" arithmetic, like
FORTRAN and C. Integers are entered as "1", "-10", etc; reals as "1.0", "-10.0", "1e1", 3.5e-1, etc. The most important difference between the
two forms is in division: division of integers truncates: 5/2 = 2;
division of reals does not: 5.0/2.0 = 2.5.

--
Chris Elvidge
England

Duh! Thanks. I'm used to working in another app where all numbers are stored as doubles.

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