The phrase "altered from an" is correct and usable in written English.
It can be used when describing something that has been changed or modified from a previous state or version.
Example: "The document was altered from an original draft to better reflect the committee's recommendations."
Alternatives: "modified from a" or "changed from an".
When he first came into the hospital, mentally altered from an underlying infection, he was irascible and unpleasant towards many staff members, swatting their hands away as they attempted to draw blood for lab tests.
Hill also noted that in hopes of addressing some of the complaints raised, the proposal in the current bill was altered from an expanded earlier version that passed the committee on July 15.
Simulation of both models revealed that when this reaction was made reversible, the reciprocal kinetic pattern obtained in the original model altered from an apparent ping-pong mechanism with parallel lines to an apparent sequential mechanism with converging lines.
Through an adjustable parameter β, the pitching profile can be altered from a sinusoidal (β = 1.0) to a square wave.
The micromechanism of deformation is altered from a combination of craze and drawing of fibrils in neat polyethylene to microvoid coalescence-fibrillated process in the nanocomposite.
SEM investigations indicated that the shape of thin films could be altered from a spherical particle to a dendritic crystal by increasing the deposition potential.
Because of that, his move was altered from a permanent deal to a season's loan, after which he went back to the Mexican team Santos Laguna.
to describe the issues faced by breast-feeding peer supporters as their roles altered from a voluntary to a professionalised role with targets, accountability and more formalised interface with health professionals.
Such improvements are attributed to the fact that after laser treatment, the microstructure of the Al2O3-based refractory was altered from a porous, randomly ordered structure, to a much more dense and consolidated structure that contained fewer cracks and porosities.
Hannaby said the combination of new information on flooding patterns in the city, combined with flood risk advice from the Environment Agency, and the biggest factor of the recession, dramatically altered from a situation where keeping development in brownfield sites would've been possible.
What really entranced me, though, was how the reveal of Iceman's sexuality intersected with something called retcon (short for "retroactive continuity"), which is when a story's previously established facts are altered from a later time in the tale's chronology – it's some element of a story, in other words, that's supposedly always been there even though it's not revealed until later.
