define color range in scatter plot

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Turbulence Analysis
Turbulence Analysis el 29 de Jun. de 2022
Comentada: Turbulence Analysis el 1 de Jul. de 2022
Hi,
I have values ranging from 0 to 3000. Here, only for the values ranging between 2000 to 3000 I have to use the color palette, for rest of the values (i.e. 0 to 1000) the color should be in black..
And I am using scatter plot here.. Is it possible to define above conditions in the scatter plot..

Respuesta aceptada

Jonas
Jonas el 29 de Jun. de 2022
Editada: Jonas el 29 de Jun. de 2022
i do not fully understand, you want to use the pallett for split to 0 to 3000, but at a certain threshold you want to use black instead?
what about values between 1000 and 2000?
x = linspace(0,3*pi,2000);
y = cos(x) + rand(1,2000);
c = linspace(1,10,length(x));
sp=scatter(x,y,[],c);
currMap=colormap();
[~,highestCDataIdx]=max(sp.CData(sp.XData<=3));
highestCDataIdx=ceil(highestCDataIdx*size(currMap,1)/numel(sp.XData)); % scale CData Index by ration of colormap elements to number of XData to map
currMap(1:highestCDataIdx,:)=0;
colormap(currMap)
you can also change values inbetween without changing the pallett
x = linspace(0,3*pi,2000);
y = cos(x) + rand(1,2000);
c = linspace(1,10,length(x));
sp=scatter(x,y,[],c);
currMap=colormap();
[~,highestCDataIdx]=max(sp.CData(sp.XData<=3));
highestCDataIdx=ceil(highestCDataIdx*size(currMap,1)/numel(sp.XData)); % scale CData Index by ration of colormap elements to number of XData to map
currMap(1:highestCDataIdx,:)=0;
colormap(currMap);
delInbetween=sp.XData<5 & sp.XData>4;
sp.XData(delInbetween)=[];
sp.YData(delInbetween)=[];
sp.CData(delInbetween)=[];
  12 comentarios
Turbulence Analysis
Turbulence Analysis el 1 de Jul. de 2022
Thank you very much, Jonas!!

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KSSV
KSSV el 29 de Jun. de 2022
Read about clim, caxis.

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