Plotting plain grid of size 100 X 100 AND selecting a "block" in the grid

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Ammar Babikir
Ammar Babikir 2017-8-31
评论： Evangelos Rompogiannakis 2020-11-18
I'm trying to plot a plain grid of a certain size. The regular " grid on " function gives me an automatic 1 X 1 grid.
I'm trying to plot a grid that is 100 X 100 and having each block a size of 1 X 1. This is what I have attempted so far:
x = (0:1:100)
y = (0:1:100)
fig1 = plot(x,x)
grid on
xlabel('x-axis')
ylabel('y-axis')
This is what it outputs
I'd like to output this grid without the line y=x showing up on it.
Also, I am trying to figure out how to select a specific block on the grid. I know that I can select a specific point on the grid but how would I be able to "shade in" an exact block on the grid.

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采纳的回答

Star Strider
Star Strider 2017-8-31
Try this:
figure(1)
plot([0:100; 0:100], [0:100; 0:100], 'k')
hold on
fill([0 1 1 0]+50, [0 0 1 1]+50, 'r') % Colour (50,50) Red
hold off
hax = gca;
hax.XTick = 0:100;
hax.YTick = 0:100;
hax.XTickLabel = [];
hax.YTickLabel = [];
grid
axis square
  8 个评论
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Star Strider
Star Strider 2017-9-1
The ‘hax’ variable is the handle to the axes object created with the initial plot call. See the documentation on Axis Properties (link) for a full description.
The hold calls permit plotting more objects (here the fill call) on the same axes. I use ‘hold on’ and ‘hold off’ to keep track of the hold state. Without the ‘on’ and ‘off’ designators, hold simply toggles the hold state.

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更多回答（1 个）

KSSV
KSSV 2017-8-31
编辑：KSSV 2017-8-31
x = (0:1:100) ;
y = (0:1:100) ;
% fig1 = plot(x,x)
[X,Y] = meshgrid(x,y) ;
mesh(X,Y,'edgecolor','k')
view(2)
grid on
xlabel('x-axis')
ylabel('y-axis')
  2 个评论
Ammar Babikir
Ammar Babikir 2017-8-31
I actually don't want any color on the grid. Would it be possible to just get that same grid that I had just without the line going through it?

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