Challenge - Change my avatar colors

The spy function without arguments does my avatar picture, white background and blue "spy".

1. Change the background color
2. Change the color of the "spy"

Tell me the code to perform the two tasks?

Please don't post the code if you appear on the first page of the Contributors or you are well known in the community for your MATLAB skills.

The prize is 4 reputation points, first answer that satisfy the requirements wins, next ones win 1 reputation point if they do the same but in some other way.

PS: The code is very simple, just two small lines.

The Challenge is complete, congratulations to the winner Nathan Greco and to Ian Wood for trying.

My code is this:

spy %draw the spy
set(gca,'Color',[1 0 0]) %change the background color
set(get(gca,'children'),'color',[1 1 0]) %change the "spy" color

[Oleg Komarov]

I am gonna create a fake account...mUahHAUhuAhua

[Paulo Silva]

That's too much effort just for 4 rep points

[Oleg Komarov]

But think about all the broken hopes....MuhsuhAHuahua

[Paulo Silva]

I edited the question several times in order to avoid cheating and also thought about the fake accounts but it would be too much effort for nothing.

Answer 1

[Nathan Greco]

My "spy" command gives me a picture of a dog:

spy

To change the background and outline color in one shot:

whitebg

To change just the background:

set(gca,'color','black');

To change just the outline:

set(get(gca,'children'),'markeredgecolor','yellow');

[Paulo Silva]

That does it, just my second task is a little bit different, Ian replied first but his code isn't 100% what was requested.

[Fangjun Jiang]

I think Nathan's code completes both tasks.

[Nathan Greco]

What do you mean by the second task is different? The "spy" itself is changed via the 'markeredgecolor' property, no?

[Paulo Silva]

I changed the color propertie of the axes children instead of the marker like you did, congratulations for wining this small contest :)

[Matt Fig]

Nathan, thanks for teaching this "old MATLAB dog" a new trick! I hadn't heard of WHITEBG before today.

Answer 2

[Ian Wood]

load spy
colormap(hot)

[Paulo Silva]

Thanks for trying but just use spy instead of load spy and do the proper changes so the spy appears with different colors.

[Ian Wood]

Doesn't using a colormap change all of the colors in one succession?

[Paulo Silva]

colormap changes the default colormap, I think it just applies to what you create after it's changed, maybe doing the spy function after it will work

[Paulo Silva]

sorry but it doesn't work anyway, thanks for trying

[Paulo Silva]

You got a vote for your efforts

[Ian Wood]

is it possible to do with the colormap function?

[Paulo Silva]

I tried several ways without success but I'm no expert on those subjects, this code set(gcf,'Colormap',hot); changes the colormap but the colors remain the same

[Nathan Greco]

I think that would work of spy consisted of a matrix of (image) data, rather than just some plotted points.

[Paulo Silva]

spy

c=get(gca,'children');

x=get(c,'xdata');

y=get(c,'ydata');

cla

plot(x,y,'*')

set(gca,'ydir','reverse')

saveas(gcf,'spy.jpg')

im=imread('spy.jpg');

image(im)

colormap(gca,hot)

Ian was right in the part where the colormap would change the colors of the current figure, sorry about my mistake Ian but I can't make it to work anyway I try :(

[Ian Wood]

That's ok, I was just wondering if I was on the right track. Thanks for the code :)