Matlab在轴上绘制美元符号 [英] matlab plot dollar symbol on axis

问题描述

我希望以美元($)表示轴上的刻度标记.

I'd like the tick-mark labels on an axis to be represented in terms of dollars ($).

我尝试过:

%set(gca, 'ZTickLabel', sprintf('$%d|', get(gca,'ZTickLabel')));

当您旋转图形时，这种方法不起作用(这会拉伸图形并添加更多的刻度线.

This doesn't work when you rotate the graph (which stretches the graph and adds more tickmarks.

我还尝试使用cur2str将其转换为货币，但这也不起作用.

I've also tried converting it to a currency using cur2str, but that doesn't work either.

请帮助！

推荐答案

出现未定义行为的原因是因为XTickLabel是一个字符数组:

The reason you are getting undefined behaviour is because XTickLabel is a character array:

>> labels = get(gca,'XTickLabel');
>> class(labels)

ans =

char

当将其传递给sprintf的%d格式说明符时，它期望使用一个十进制数字-而不是字符数组-因此它将字符转换为整数表示并打印出来.

When you pass this to sprintf's %d format specifier, it's expecting a single decimal number - not an array of characters - so it converts the characters to their integer representations and prints those.

要查看此内容，请尝试:

To see this, try:

>> sprintf('%d','1')

ans =

49

您真正想做的是将字符数组视为字符数组:

What you really want to do is treat the character arrays like character arrays:

>> labels = get(gca,'XTickLabel')

labels =

0
1
2
3
4
5
6
7

>> dollar_signs = repmat('$',size(labels,1),1)

dollar_signs =

$
$
$
$
$
$
$
$

>> new_labels = [dollar_signs labels]

new_labels =

$0
$1
$2
$3
$4
$5
$6
$7

>> set(gca,'XTickLabels',new_labels)

这具有您想要的效果:

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