Although in jyotiṣa there are two kinds of dṛṣṭis
(aspects): rāśi and graha dṛṣṭis, astrologers generally utilize only graha dṛṣṭi.
One of the reasons is that some think that the rāśi dṛṣṭi is to be used only in
Jaiminī astrology. However, there is a view, – which I agree – that Jaiminī
just continued what Parāśara taught. The prove of this is that Parāśara also
gave to us rāśi dṛṣṭis, argalās, ārūḍhas, cara kārakas, rāśi daśās, including a
whole chapter teaching how to predict using cara daśā and other rāśi daśās. Therefore,
there is enough proof that Jaiminī only developed more some of these techniques
in his Upadeśa Sūtras.
Now,
coming back to dṛṣṭis, I will put here my understanding of this question:
(1) Rāśi dṛṣṭis are sign aspects, in this the movable signs
aspects the fixed signs, and the fixed signs the movable signs. The dual signs aspects only the dual signs.
(2) Graha dṛṣṭis are graha aspects, in this all the
planets look the 7th from them, and Mars, Jupiter, Saturn have
special dṛṣṭis known among all the students and scholars of jyotiṣa.
(3) Rāśi type of dṛṣṭi is a fixed dṛṣṭi, yogas formed in
this way will work through the life and their variations will occur according
to daśā and transit, but it cannot stop to work as it connects circumstances, environments
(rāśis).
(4) Graha dṛṣṭis are temporal, they need to be achieved
through daśā, so they are not fixed and they connect entities.
(5) This is the best way to understand this dṛṣṭis: one is
temporal and the other is fixed, one connects circumstances and the other
entities.