斜体无法在ggplot2中的标签上使用？

Question

请考虑以下情节。我已经维护了结构，软件包等的详细信息，因为我不确定是什么引起了该问题。我确信这很简单，但是我无法使其正常工作。

float x0 = -(float)32.f, y0 = -(float)32.f;
float x1 =  (float)32.f, y1 = (float)32.f;
   // Set attributes
const QVector3D vertices[4] = {
    QVector3D( x0, y0, 0.0f),
    QVector3D( x0, y1, 0.0f),
    QVector3D( x1, y1, 0.0f),
    QVector3D( x1, y0, 0.0f)
};


const QVector3D normals[4] = {
    QVector3D(0.0f, 0.0f,1.0f),
    QVector3D(0.0f, 0.0f,1.0f),
    QVector3D(0.0f, 0.0f,1.0f),
    QVector3D(0.0f, 0.0f,1.0f)
};
const QVector2D texcoords[4] = {
    QVector2D(0.0f, 1.0f),
    QVector2D(0.0f, 0.0f),
    QVector2D(1.0f, 0.0f),
    QVector2D(1.0f, 1.0f)
};


const unsigned int indices[4] = { 0, 1, 2, 3 };
// const unsigned int indices[4] = { 3, 2, 1, 0 };

shProgram.enableAttributeArray("vVertices");
shProgram.enableAttributeArray("vTexCoords");
shProgram.enableAttributeArray("vNormals");

shProgram.setAttributeArray("vVertices", vertices);
shProgram.setAttributeArray("vTexCoords", texcoords);
shProgram.setAttributeArray("vNormals", normals);

glDrawElements(GL_TRIANGLE_FAN, 4, GL_UNSIGNED_INT, indices);



shProgram.disableAttributeArray("vVertices");
shProgram.disableAttributeArray("vTexCoords");
shProgram.disableAttributeArray("vNormals");

我希望将普通字体与斜体混合使用。为何斜体不对expression（）的标签起作用？我看到了很多类似的工作示例。

编辑：这是在RStudio 1.1.456上

Answer 1

由于您的代码在某些用户看来还不错，如代码中所示（请注意第一个刻度是用于可视化的常规字体），因此可以尝试更新软件包

更新单个软件包

对于ggplot2之类的库，您可以使用select * from ( select WP.ID CR_ID, case when row_number() over(partition by WP.ID order by 1) < 14 then to_char(to_number(WP.WORK_YEAR, '9999') - 1) when row_number() over(partition by WP.ID order by 1) > 25 then to_char(to_number(WP.WORK_YEAR, '9999') + 1) else to_char(to_number(WP.WORK_YEAR)) end WORK_YEAR, PRODUCTION.COLUMN_VALUE PRODUCTION, case when row_number() over(partition by WP.ID order by 1) - 1 < 13 then row_number() over(partition by WP.ID order by 1) - 1 when row_number() over(partition by WP.ID order by 1) - 13 > 0 then case when row_number() over(partition by WP.ID order by 1) - 13 < 13 then row_number() over(partition by WP.ID order by 1) - 13 else row_number() over(partition by WP.ID order by 1) - 25 end end MNTH from LINEWORK.WORK_PRODUCTION WP, table(WP.PRODUCTION) PRO ) pivot ( sum(PRODUCTION) for MNTH in ( 0 TOTAL, 1 JANUARY, 2 FEBRUARY, 3 MARCH, 4 APRIL, 5 MAY, 6 JUNE, 7 JULY, 8 AUGUST, 9 SEPTEMBER, 10 OCTOBER, 11 NOVEMBER, 12 DECEMBER ) ) order by ID, WORK_YEAR ; 函数（documentation）

更新r

对于此答案，链接旧的stackoverflow question

更容易

您必须从网站上download R并手动重新安装，可惜RStudio中没有选择这样做。要获得更多帮助和更详细的步道，请查看旧帖子。