Temperature- and pressure-induced spin-state transitions in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>LaCoO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

We report the continuous variation of the spin moment of cobalt in ${\mathrm{LaCoO}}_{3}$ across its temperature and pressure-induced spin transitions evidenced with $K\ensuremath{\beta}$ emission spectra. The first thermal transition is best described by a transition to an orbitally nondegenerate intermediate spin $(S=1)$ state. In parallel, continuous redistribution of the $3d$ electrons is also indicated by partial fluorescence yield x-ray absorption spectra. At high pressure, our study confirms that the material becomes low spin between 40 and 70 kbar at room temperature.