Another example: -=-=-=-=-=-=-=-=-=-=-=-=-=-=-= "This example shows how to control the center of the graph. Roassal assumes to have 0 @ 0, however you can subtract a value using #x: and #y:, and then add it in #labelConversion: to move the center of the graph" graphCenter := 5 @ 10. data := (-3.1415 to: 3.1415 by: 0.1) collect: [ :x | x @ (x sin * 3 + 10) ]. b := RTGrapher new. ds := RTData new. ds noDot; connectColor: Roassal2.Color blue. ds points: data. ds x: [ :p | p x - graphCenter x ]. ds y: [ :p | p y - graphCenter y ]. b add: ds. b axisX labelConversion: [ :v | (v + graphCenter x) asFloat ]. b axisY labelConversion: [ :v | (v + graphCenter x) asFloat ]. b. -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
-- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > On Dec 19, 2017, at 3:05 PM, Alexandre Bergel <alexandre.ber...@me.com> wrote: > > Hi Evan, > > Roassal assumes to have 0 @ 0. However, you do a manual translation that > works very well. Check this: > > -=-=-=-=-=-=-=-=-=-=-=-=https://www.dropbox.com/s/oun1w85ypv1kbka/Screenshot%202017-12-19%2015.02.07.png?dl=0 > > <https://www.dropbox.com/s/oun1w85ypv1kbka/Screenshot%202017-12-19%2015.02.07.png?dl=0> > data := #(1000 1001 1002). > b := RTGrapher new. > ds := RTData new. > ds points: data. > ds x: [ :c | c - 1000]. > ds y: [ :c | c - 1000 ]. > b add: ds. > b axisX labelConversion: [ :v | (v + 1000) asFloat ]. > b axisY labelConversion: [ :v | (v + 1000) asFloat ]. > b. > -=-=-=-=-=-=-=-=-=-=-=-= > <Screenshot 2017-12-19 15.02.07.png> > > The idea is to subtract a value using #x: and #y:, and then add it in > #labelConversion: > > Let us know how it goes > > -- > _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: > Alexandre Bergel http://www.bergel.eu <http://www.bergel.eu/> > ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. > > > >> On Dec 19, 2017, at 12:44 PM, Evan Donahue <emdon...@gmail.com >> <mailto:emdon...@gmail.com>> wrote: >> >> Does anyone know how to change the min/max of the axes? I'm trying to figure >> out how to make x and y not start at 0. >> >> data := #(1000 1001 1002). >> b := RTGrapher new. >> ds := RTData new. >> ds points: data. >> ds x: [ :c | c ]. >> ds y: [ :c | c ]. >> b add: ds. >> b minX: 999. >> b maxX: 1003. >> b minY: 999. >> b maxY: 1003. >> b. >> >> ^ this does not do what I was expecting. If the data is all clustered >> together but far from zero, I'd like to adjust the axes so I can see the >> actual variation in the data, and not just a single point where everything >> is clustered. What is the right way to do this? >> >> Thanks, >> Evan >
